1.
Solve the equation 2
a
-
b
=
ac
+ 3
b
for
a
.
A.
B.
C.
D.
Hint
2.
Solve the equation 3
x
+
y
= 6 for
x
.
A.
x
= 2 -
y
B.
C.
x
= 6 - 3
x
D.
x
= 5
y
Hint
3.
The formula
A
=
lw
finds the area of a rectangle. What is the width of a rectangle whose area is 60 square inches and whose length is 5 inches?
A.
25 in.
B.
12 in.
C.
55 in.
D.
12.5 in.
Hint
4.
Solve 4
w
–
x
=
wy
+ 10 for
w
.
A.
B.
w
= 14 +
x
–
y
C.
D.
Hint
5.
Use the formula
P
= 2
l
+ 2
w
to find the length of a rectangle whose perimeter is 57 inches and whose width is 13 inches.
A.
31 inches
B.
15.5 inches
C.
22 inches
D.
10.3 inches
Hint