### 1.3–1.4 Quiz

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• 1. Finding the Number of People with Disabilities

The circle graph shows the age categories of people with disabilities in the United States. There are about 36 million people with disabilities in the United States. How many of the people with disabilities are 65 years old or older?

• Worked-Out Solution

From the circle graph, you can see that 39% of people with disabilities in the United States are 65 years old or older. Because the total number of people with disabilities in the United States is 36 million, you can conclude that

represents the number of people with disabilities in the United States who are 65 years old or older.

The U.S. Social Security Administration defines disability in terms of inability to perform substantial gainful activity (SGA), by which it means "work paying minimum wage or better." The agency pairs SGA with a "listing" of medical conditions that qualify individuals for benefits.

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``` _    _      ___     _____     __   __
| || | ||   / _ \\  |  __ \\   \ \\/ //   ____
| || | ||  / //\ \\ | |  \ ||   \ ` //   |    \\
| \\_/ || |  ___  ||| |__/ ||    | ||    | [] ||
\____//  |_||  |_|||_____//     |_||    |  __//
`---`   `-`   `-`  -----`      `-`'    |_|`-`
`-`
```
Guest   1 year ago |
That is a hot horse
0
• 2. Estimating the Number of People with Disabilities

The circle graph shows the age categories of people with disabilities in the United States. The population of the United States is about 310 million. Estimate the percent of the general population that is disabled.

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```  ______     ___      _  _     ______   __   __
/_   _//   / _ \\   | \| ||  /_   _//  \ \\/ //
| ||    | / \ ||  |  ' ||   -| ||-    \   //
_| ||    | \_/ ||  | .  ||   _| ||_    / . \\
/__//      \___//   |_|\_||  /_____//  /_//\_\\
`--`       `---`    `-` -`   `-----`   `-`  --`

```
• 3. The Relationship between Disability and Age

The circle graph shows the age categories of people with disabilities in the United States. People that are 65 years old and over only make up about 13% of the general population. Compare this to the percent of the disabled population for this group. Why do you think there is a discrepancy?

• Worked-Out Solution

The circle graph at the right shows the age distribution of the population of the United States.

By comparing the two circle graphs, you can see that as people get older, they are more and more likely to develop some type of disability.

There are several types of disabilities.

1. Mobility and Physical Impairments
2. Spinal Cord Disability
3. Head Injuries - Brain Disability
4. Vision Disibility
5. Hearing Disability
6. Cognitive or Learning Disabilites
7. Psychological Disorders
8. Invisible Disabilities: Invisible Disabilities are disabilities that are not immediately apparent to others. It is estimated that 10% of people in the U.S. have a medical condition considered a type of invisible disability.

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```__    __   _    _    _    _    _    _    ______
\ \\ / // | || | || | |  | || | || | || |      \\
\ \/ //  | || | || | |/\| || | || | || |  --  //
\  //   | \\_/ || |  /\  || | \\_/ || |  --  \\
\//     \____//  |_// \_||  \____//  |______//
`       `---`   `-`   `-`   `---`   `------`

```
• 4. The Relationship between Disability and Age

The circle graph shows the age categories of people with disabilities in the United States. Compare the percent for people under 18 years old to the percents for the other categories. Why do you think the percent for people under 18 years old is so small?

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```  ____       ___      _____     _____
|  _ \\    / _ \\   / ____||  |  ___||   ____
| |_| ||  / //\ \\ / //---`'  | ||__    |    \\
| .  //  |  ___  ||\ \\___    | ||__    | [] ||
|_|\_\\  |_||  |_|| \_____||  |_____||  |  __//
`-` --`  `-`   `-`   `----`   `-----`   |_|`-`
`-`
```
• 5. Finding the Height of a Horse

The height of a horse is measured from the ground to its withers (shoulders). The traditional unit of measure is "hands," where 1 hand is equal to 4 inches. A horse is 15 hands high. What is its height in inches?

• Worked-Out Solution

You can use unit analysis to find the height in inches.

The horse is 60 inches (or 5 feet) high (at its shoulders). This height is typical for a horse.

Horses range in height from 14 hands (56 inches) to 18 hands (72 inches) depending on breed and nutrition. The largest horse ever recorded was born in 1848 in England. Appropriately named Mammoth, he was probably a Shire horse who stood 21.2 hands high or 86.5 inches.

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```  _____     _____    __   __   _    _    __   __
|__  //   |  ___||  \ \\/ // | || | ||  \ \\/ //
/ //    | ||__     \   //  | || | ||   \   //
/ //__   | ||__     / . \\  | \\_/ ||   / . \\
/_____||  |_____||  /_//\_\\  \____//   /_//\_\\
`-----`   `-----`   `-`  --`   `---`    `-`  --`

```
• 6. Finding the Speed of a Horse

American Quarter Horses are the fastest horses in the world. They can run 55 miles per hour. How fast is this in feet per second?

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```             ___     __   _     _____    _____
___     / _ \\  | || | ||  |  ___|| |  __ \\
/   ||  | / \ || | '--' ||  | ||__   | |  \ ||
| [] ||  | \_/ || | .--. ||  | ||__   | |__/ ||
\__ ||   \___//  |_|| |_||  |_____|| |_____//
-|_||   `---`   `-`  `-`   `-----`   -----`
`-`
```
• 7. Finding the Length of the Belmont Stakes

The length of a horse race is often given in furlongs, where 1 furlong is equal to 0.125 mile. The Belmont Stakes is a 1.5-mile horse race that takes place every June at Belmont Park in Elmont, New York. How long is the Belmont Stakes in furlongs?

• Worked-Out Solution

You can use unit analysis to find the length in furlongs.

The Belmont Stakes is the third and longest thoroughbred horse race of the Triple Crown.

1. Kentucky Derby:  1.25 mi
2. Preakness Stakes:  1.1875 mi
3. Belmont Stakes:    1.5 mi

The record time for the Belmont Stakes was set in 1973 by an amazing horse named Secretariat. In the Belmont Stakes, Secretariat finished 31 lengths ahead of the second-place horse, with a time of 2 minutes and 24 seconds. That corresponds to a speed of

At the time of Secretariat's death, the veterinarian who performed the necropsy, estimated that Secretariat's heart probably weighed 22 pounds or about two-and-a-half times as large as that of the average horse.

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```   _____   __   __    ______     ___      _____
/ ___//  \ \\/ //  /_   _//   / _ \\   / ____||
\___ \\   \ ` //     | ||    / //\ \\ / //---`'
/    //    | ||     _| ||   |  ___  ||\ \\___
/____//     |_||    /__//    |_||  |_|| \_____||
`-----`      `-`'    `--`     `-`   `-`   `----`

```
• 8. Convert Degrees Fahrenheit to Celsius

The record high temperature in June in Elmont, New York is 101°F. What is the record high temperature in degrees Celsius?

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``` _    _    __   __   __   __    _____    __   _