1.
There are 12 inches in every foot. Using
i
for the number of inches, write a rule that tells how many inches are in
f
feet.
A.
f
= 12
i
B.
i
= 12
f
C.
12 =
i
+
f
D.
f
= 12 +
f
Hint
2.
Tamika earns $9 per hour working at the library. She normally works 15 hours per week. How much does she earn in a typical week?
A.
$81
B.
$24
C.
$135
D.
$225
Hint
3.
Tamika earns $9 per hour and Jon earns $6.50 per hour at their respective jobs. The graph below shows their pay. In what ways are the graphs the same?
A.
They both earn at least $50 after 8 hours worked.
B.
Both graphs have the same slope.
C.
all answers are correct
D.
The largest amount they both can earn is $100.
Hint
4.
Nina earns $12 per hour as a sales clerk at the mall. If you added a line to the graph below to show Nina's pay, how would it compare to the other two graphs showing Tamika's and Jon's pay?
A.
The line would be nearly horizontal.
B.
The line would be between Tamika's and Jon's lines.
C.
The line would not appear on the graph because Nina makes so much more than Tamika and Jon.
D.
The line would be steeper.
Hint
5.
Find the relationship that is not proportional.
A.
m
= 10
c
, where
m
is the number of millimeters and c is the number of centimeters.
B.
p
= 4
s
, where
p
is the perimeter of a square and
s
is the length of one side of the square.
C.
A
=
r
2
, where
A
is the area of a circle and
r
is the radius of the circle.
D.
S
= 180
n
– 360, where
S
is the sum of the interior angles in a polygon and
n
is the number of sides of the polygon.
Hint