Unit 4 Lesson 7 Practice Problems

The temperature was recorded at several times during the day. Function T gives the temperature in degrees Fahrenheit, n hours since midnight.

Decide if the average rate of change is positive, negative, or zero: from n=1 to n=5

• Positive

• Negative

• Zero

The temperature was recorded at several times during the day. Function T gives the temperature in degrees Fahrenheit, n hours since midnight.

Decide if the average rate of change is positive, negative, or zero: from n=5 to n=7

• Positive

• Negative

• Zero

The temperature was recorded at several times during the day. Function T gives the temperature in degrees Fahrenheit, n hours since midnight.

Decide if the average rate of change is positive, negative, or zero: from n=10 to n=20

• Positive

• Negative

• Zero

The temperature was recorded at several times during the day. Function T gives the temperature in degrees Fahrenheit, n hours since midnight.

Decide if the average rate of change is positive, negative, or zero: from n=15 to n=18

• Positive

• Negative

• Zero

The temperature was recorded at several times during the day. Function T gives the temperature in degrees Fahrenheit, n hours since midnight.

Decide if the average rate of change is positive, negative, or zero: from n=20 to n=24

• Positive

• Negative

• Zero

The graph shows the total distance, in feet, walked by a person as a function of time, in seconds.



​​​​​​Was the person walking faster between 20 and 40 seconds or between 80 and 100 seconds?

• 20 and 40 Seconds

• 80 and 100 Seconds

The graph shows the total distance, in feet, walked by a person as a function of time, in seconds.



Was the person walking faster between 0 and 40 seconds or between 40 and 100 seconds?

• 0 and 40 Seconds

• 40 and 100 Seconds

• A: 4, B: 2, C: 1, D: 3

• A: 2, B: 4, C: 1, D: 3

• A: 4, B: 2, C: 3, D: 1

• A: 2, B: 4, C: 3, D: 1

Jada walks to school. The function D gives her distance from school, in meters, minutes since she left home.

Which equation tells us “Jada is 600 meters from school after 5 minutes”?

• D(5)=600

• D(600)=5

• t(5)=600

• t(600)=5

Jada walks to school. The function D gives her distance from school, in meters, as a function of time, in minutes, since she left home.

What does D(10)=0 represent in this situation?

• After 10 minutes, Jada is 0 meters from school. She is at school after 10 minutes.

• After 0 minutes, Jada is 10 meters from school.