Chapter 4 Review

Predict the next three numbers in the pattern.

12, 15, 18, 21, 24, ...

• 27, 30, 33

• 28, 31, 34

• 21, 18, 15

• 25, 26, 27

Find the range of the function for the given domain.
 $f\left(x\right)=3x-5;\ \left\{-2,\ -1,\ 0,\ 1,\ 2\right\}$  

•  $\left\{-11,\ -7,\ -6,\ -1,\ 1\right\}$  

•  $\left\{-11,\ -7,\ -5,\ -1,\ 1\right\}$  

•  $\left\{-11,\ -8,\ -5,\ -2,\ 1\right\}$  

•  $\left\{-12,\ -8,\ -5,\ -2,\ 2\right\}$  

Light travels about 186,000 mi / s. The function  $d\left(t\right)=186,000t$  gives the distance d(t), in miles, that light travels in t seconds. How far does light travel in 31 s?

•  $d\left(31\right)=185,969$  

•  $d\left(31\right)=186,031$  

•  $d\left(31\right)=62,000\ miles$  

•  $d\left(31\right)=5,766,000$  

Determine if the graph is a function.

Using the vertical line test, is this the graph of a function?

• Yes

• No

Use the vertical line test to determine whether each relation is also a function.

Using the vertical line test, is this the graph of a function?

• Yes

• No

Use a mapping diagram to determine whether the relation is a function.
 $\left\{\left(5,3\right),\left(4,7\right),\left(4,5\right),\left(8,9\right),\left(2,14\right),\left(5,2\right)\right\}$  
Is the relation a function?

• 
• 
• 
• Yes

• No

What is f(4) for the function  $f\left(x\right)=2x+5$  

•  $f\left(4\right)=-\frac{1}{2}$  

•  $f\left(4\right)=13$  

•  $f\left(4\right)=-13$  

•  $f\left(4\right)=\frac{1}{2}$  

Use a mapping diagram to determine whether the relation is a function.
 $\left\{\left(4,3\right),\left(2,8\right),\left(2,6\right),\left(9,9\right),\left(3,11\right),\left(4,5\right)\right\}$  
Is the relation a function?

• 
• 
• 
• Yes

• No

A car rental agency charges $33 per day to rent a car and $14.95 per day for a global positioning system (GPS). Customers are charged for their full tank of gas at $3.50 per gallon. A car has a 13 gallon tank and a GPS.
Write a function rule for the total bill b as a function of the days d the car is rented. 

•  $b=47.95d+45.50$  

•  $d=47.95b+45.50$  

•  $b=93.45d$  

•  $d=93.45b$  

Write a function rule that represents the sentence.

y is 2 less than the product of 7 and x.

• $y=7-2x$

• $y=2-7x$

• $y=7x-2$

• $y=2x-7$