1.
Evaluate 3
x
+ 2
y
if
x
= 3 and
y
= 7.
A.
105
B.
23
C.
27
D.
5
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.
15 miles
B.
1 mile
C.
10 miles
D.
3 miles
Hint
3.
Evaluate 7 × (
a
- 4) if
a
= 9.
A.
59
B.
63
C.
35
D.
28
Hint
4.
Evaluate
a
b
+ 8 if
a
= 4 and
b
= 7
A.
60
B.
28
C.
36
D.
55
Hint
5.
Evaluate 5
k
+
if
k
= 3,
m
= 20, and
n
. = 5.
A.
57
B.
20
C.
7
D.
19
Hint