1.
Evaluate 3
x
+ 2
y
if
x
= 3 and
y
= 7.
A.
27
B.
23
C.
5
D.
105
Hint
2.
The equation
where
d
represents the distance in miles
and
t
is the number of seconds between seeing lightening and
hearing thunder, tells how far away a thunderstorm is.
How far is it to a thunderstorm if you count 15 seconds between
seeing the lightening and hearing the thunder?
A.
1 mile
B.
3 miles
C.
15 miles
D.
10 miles
Hint
3.
Evaluate 7 × (
a
- 4) if
a
= 9.
A.
63
B.
35
C.
28
D.
59
Hint
4.
Evaluate
x
+ 5
y
if
x
= 12 and
y
= 9.
A.
71
B.
57
C.
153
D.
47
Hint
5.
Evaluate
y
3
if
y
= 4.
A.
64
B.
43
C.
16
D.
12
Hint