P
S
I
roblem-
olving
nvestigation:
3-7
Choose a Strategy
(pp. 118–119)
Example 8
Use any strategy to solve.
Pia wants to earn $75. If she earns
24. Bruce has 19 baseball hats. Rashid
$15 each time she babysits, how
has 5 more than Bruce. Shelly has
many times will she have to babysit
2 less than Rashid. How many
in order to earn $75?
baseball hats does Shelly have?
U
nderstand
Algebra
25.
What four shapes come
Pia earns $15 each time she
next in the pattern if it continues?
babysits. She wants to earn $75.
Find the number of days Pia
needs to babysit to earn $75.
26. The sum of two numbers is 14.
P
lan
Organize the data in a table to
The difference between those
solve the problem.
same two numbers is 0. What are
the two numbers?
S
olve
Day
Money Earned
1
$15
Algebra
27.
What shape will be tenth
2
$30
in the pattern if it continues?
3
$45
4
$60
5
$75
Pia will have to babysit 5 times
Measurement
28.
Grant’s favorite
to earn $75.
video game takes him 132 minutes
to win. Each level takes Grant
C
heck
$75 - $15 = $60
about 22 minutes to clear. About
$60 - $15 = $45
how many levels does his video
$45 - $15 = $30
game have?
$30 - $15 = $15
$15 - $15 = $0
29. Doria works at a sandwich shop.
Subtracting $15 from $75 five
There are 3 different kinds of
times equals 0. So, the answer
bread and 5 different kinds of
makes sense.
meat to choose from. How many
different sandwiches can be made
using one bread and one meat?
Chapter 3 Study Guide and Review 137