1.
Evaluate 3
x
+ 2
y
if
x
= 3 and
y
= 7.
A.
5
B.
105
C.
27
D.
23
Hint
2.
Evaluate
if
a
= 5,
b
= 6 and
c
= 3.
A.
B.
30
C.
3
D.
10
Hint
3.
Evaluate
if
a
= 9,
b
= 6 and
c
= 3.
A.
9
B.
11
C.
5
D.
15
Hint
4.
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.
3 miles
B.
1 mile
C.
15 miles
D.
10 miles
Hint
5.
Evaluate 5
k
+
if
k
= 3,
m
= 20, and
n
. = 5.
A.
57
B.
20
C.
19
D.
7
Hint