Intermediate Algebra (11th edition)

(Marvins-Underground-K-12) #1

110 CHAPTER 2 Linear Equations, Inequalities, and Applications



  1. or 60. and

  2. and 62. or


Average expenses for full-time resident college students at 4-year institutions during the
2007–2008 academic year are shown in the table.

x+ 1 Ú 5 x- 2 ... 10 - 8 x...- 24 - 5 xÚ 15


  • 3 x...- 6 - 3 xÚ 0 2 x- 6 ...- 18 2 xÚ- 18


EXERCISES 67–72

FOR INDIVIDUAL OR GROUP WORK
The figures represent the backyards of neighbors Luigi, Maria, Than, and Joe. Find the
area and the perimeter of each yard. Suppose that each resident has 150 ft of fencing
and enough sod to cover 1400 of lawn. Give the name or names of the residents
whose yards satisfy each description. Work Exercises 67–72 in order.

ft^2

RELATING CONCEPTS


30 ft

50 ft

Luigi’s yard

40 ft

Maria’s yard

35 ft

60 ft

Than’s yard

50 ft

40 ft

Joe’s yard

30 ft
50 ft

Refer to the table on college expenses. List the elements of each set. See Example 9.
63.The set of expenses that are less than $6500 for public schools andare greater than $10,000
for private schools
64.The set of expenses that are greater than $3000 for public schools andare less than $4000
for private schools
65.The set of expenses that are less than $6500 for public schools orare greater than $10,000
for private schools
66.The set of expenses that are greater than $12,000 orare between $5000 and $6000

College Expenses (in Dollars), 4-Year
Institutions
Public Schools
Type of Expense (in-state) Private Schools
Tuition and fees 5950 21,588
Board rates 3402 3993
Dormitory charges 4072 4812
Source:National Center for Education Statistics.

67.The yard can be fenced andthe yard can be sodded.
68.The yard can be fenced andthe yard cannot be sodded.
69.The yard cannot be fenced andthe yard can be sodded.
70.The yard cannot be fenced andthe yard cannot be sodded.
71.The yard can be fenced orthe yard can be sodded.
72.The yard cannot be fenced orthe yard can be sodded.
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