1.
Which equation describes graph A?
A.
y
= 2.25|
x
| - 1
B.
y
= | 2.25
x
|
C.
y
= |
x
- 1 |
D.
y
= 2.25
x
- 1
Hint
2.
A cellular telephone company charges $0.20 per minute or fraction thereof. If Miguel, a customer of this company, talks on his cell phone for 23.27 minutes, what will his charges be for that phone call?
A.
$4.65
B.
$4.80
C.
$4.66
D.
$4.60
Hint
3.
What is the slope of a constant function?
A.
0
B.
-1
C.
c
, where
f
(
x
) =
c
D.
1
Hint
4.
What type of function is shown in the graph?
A.
step function
B.
absolute value function
C.
constant function
D.
piecewise function
Hint
5.
Suppose a plant grows one inch every year. If
x
is how old the plant is (in years), and
f
(
x
) is how tall the plant is (in inches), what type of function is
f
(
x
)?
A.
identity function
B.
step function
C.
absolute value function
D.
constant function
Hint