7-5 Quiz
Exponential Functions

For #’s 1 and 2, graph each function. Complete each table of table of values, list the y-intercept, and state the domain and range. (5pts each)

1. y = 2. y =
x
y
-2

-1

0

1

2

x
y
-2

-1

0

1

2



y-intercept =y-intercept =

Domain:Domain:

Range:Range:

Determine whether the set of data shown below displays exponential behavior. Write exponential, linear, or neither for your answer. Then explain why. (2pts each)
3.
x
2
5
8
11

y
480
120
30
7.5
4.
x
21
18
15
12

y
30
23
16
9



5. BIOLOGY Suppose a certain cell reproduces itself in 24 hours. If a lab researcher begins with 50 cells, how many cells will there be after three days? Hint: Use the exponential function y = 50(). (1pt)