Page 107 - Basic College Mathematics with Early Integers

84 C HAPTE R 1 I THE WHOLE NUMBERS

Find the average number of Internet users for the world regions listed in the graph on page 83.

49. The three world regions with the greatest number of 50. The four world regions with the least number of
Internet users. Internet users.

Solve.

51. The learning lab at a local university is receiving new 52. The washateria near the local community college is
equipment.Twenty-two computers are purchased for receiving new equipment.Thirty-six washers are
$615 each and three printers for $408 each. Find the purchased for $585 each and ten dryers are
total cost for this equipment. purchased for $388 each. Find the total cost for this
equipment.

53. The American Heart Association recommends 54. This semester a particular student pays $1750 for
consuming no more than 2400 milligrams of salt room and board, $709 for a meal ticket plan, and
per day. (This is about the amount in 1 teaspoon $2168 for tuition.What is her total bill?
of salt.) How many milligrams of sodium is this
in a week?

55. The Meishs’ yard is in the shape of a rectangle and 56. The community is planning to construct a rectangular-
measures 50 feet by 75 feet. In their yard, they have shaped playground within the local park.The park is
a rectangular swimming pool that measures 15 feet in the shape of a square and measures 100 yards on
by 25 feet. each side.The playground is to measure 15 yards by
a. Find the area of the entire yard. 25 yards.
b. Find the area of the swimming pool. a. Find the area of the entire park.
c. Find the area of the yard that is not part of the b. Find the area of the playground.
swimming pool. c. Find the area of the park that is not part of the
playground.

25 ft
15 ft
100 yd

75 ft 50 ft 15 yd
25 yd
100 yd

Concept Extensions

57. In 2008, the United States Postal Service issued 58. The average estimated population of the United
approximately 149,100,000 money orders worth States for 2009 was 307,607,800.The land area of the
approximately $25,649,300,000. Round the number country is approximately 3,794,068 square miles.
Copyright 2012 Pearson Education, Inc.
of money orders and the value of the money orders Round each number to the nearest million to
issued to the nearest ten-million to estimate the estimate the population per square mile in the
average value of each money order. (Source: United United States for 2009.
States Postal Service)

59. Write an application of your own that uses the term “bank account” and the numbers 1036 and 524.