1.
If
f
(
x
) = [2
x
- 1], find
f
(5.4).
A.
10
B.
9.8
C.
8
D.
9
Hint
2.
Which equation describes graph A?
A.
y
= 2.25
x
- 1
B.
y
= 2.25|
x
| - 1
C.
y
= |
x
- 1 |
D.
y
= | 2.25
x
|
Hint
3.
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.
$4.66
C.
$4.80
D.
$4.60
Hint
4.
What type of function is shown in the graph?
A.
constant function
B.
piecewise function
C.
step function
D.
absolute value 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.
constant function
B.
identity function
C.
step function
D.
absolute value function
Hint