An average middle-income family will spend
$221,190to raise a child born in 2008 from
birth through age 17. The graph shows the
percents spent for various categories. Use
the graph to answer Exercises 47–50. See
Example 7.
47.To the nearest dollar, how much will be
spent to provide housing for the child?
48.To the nearest dollar, how much will be
spent for health care?
49.Use your answer from Exercise 48to
find how much will be spent for child
care and education.
50.About $35,000 will be spent for food. To the nearest percent, what percent of the cost of
raising a child from birth through age 17 is this? Does your answer agree with the percent
shown in the graph?
Solve each problem about percent increase or percent decrease. See Example 8.
66 CHAPTER 2 Linear Equations, Inequalities, and Applications
Source: U.S. Department of Agriculture.
Miscellaneous
8%
Child care/
education 16%
Transportation 14%
Health care
8%
Clothing 6%
Housing
32%
Food
16%
The Cost of Parenthood
51.After 1 yr on the job, Grady got a raise
from $10.50 per hour to $11.34 per hour.
What was the percent increase in his
hourly wage?
52.Clayton bought a ticket to a rock concert
at a discount. The regular price of the
ticket was $70.00, but he only paid
$59.50. What was the percent discount?
53.Between 2000 and 2007, the estimated
population of Pittsfield, Massachusetts,
declined from 134,953 to 129,798. What
was the percent decrease to the nearest
tenth? (Source:U.S. Census Bureau.)
54.Between 2000 and 2007, the estimated
population of Anchorage, Alaska, grew
from 320,391 to 362,340. What was the
percent increase to the nearest tenth?
(Source:U.S. Census Bureau.)
55.In April 2008, the audio CD of the
Original Broadway Cast Recording of
the musical Wickedwas available for
$9.97. The list price (full price) of this
CD was $18.98. To the nearest tenth,
what was the percent discount? (Source:
http://www.amazon.com)
56.In April 2008, the DVD of the movie
Alvin and the Chipmunkswas released.
This DVD had a list price of $29.99 and
was on sale for $15.99. To the nearest
tenth, what was the percent discount?
(Source:www.amazon.com)
Solve each equation. See Section 2.1.
- 59.2.4+0.4x=0.25 16 +x 2 60.0.07x+0.05 19000 - x 2 = 510
4 x+ 41 x+ 72 = 124 x+0.20x= 66
PREVIEW EXERCISES
