56.Concept Check Which inequality requires reversing the inequality symbol when it is
solved?
A. B. C. D.Solve each inequality. Write the solution set in interval notation, and graph it.Solve each problem.
65.Awilda Delgado has grades of 94 and 88 on her first two calculus tests. What possible
scores on a third test will give her an average of at least 90?
66.If nine times a number is added to 6, the result is at most 3. Find all such numbers.- 3 ... 2 x+ 1 ... 4 963 x+ 5 ... 20
4 x- 3 x 710 - 4 x+ 7 x 312 x+ 52 + 418 + 3 x 26513 x+ 72- 6 x...- 18 81 x- 52 - 12 + 7 x 2 Ú 4
x+ 6 Ú 3 5 x 64 x+ 24 xÚ- 36 - 4 x... 36 4 x 636 4 x 736170 CHAPTER 2 Linear Equations and Inequalities in One Variable
MIXED REVIEW EXERCISES
Solve.
- for r
75 .A family of four with a monthly income of $3800 plans to spend 8% of this amount
on entertainment. How much will be spent on entertainment?1
3
s+1
2
s+ 7 =5
6
9 x- 17 x+ 22 = 3 x+ 12 - x 2 s+ 5 + 20.05x+0.02x=4.9 2 - 31 x- 52 = 4 +x- 2 x7- 4 2 k- 5 = 4 k+ 13
I=prtx
7=
x- 5
276 .Athletes in vigorous training programs
can eat 50 calories per day for every
2.2 lb of body weight. To the nearest
hundred, how many calories can a 175-lb
athlete consume per day? (Source: The
Gazette.)77 .The Golden Gate Bridge in San
Francisco is 2604 ft longer than the
Brooklyn Bridge. Together, their spans
total 5796 ft. How long is each bridge?
(Source: World Almanac and Book of
Facts.)78 .Find the best buy. Give the unit price to the nearest thousandth
for that size. (Source:Cub Foods.)LAUNDRY
DETERGENT
Size Price
50 oz $ 4.69
100 oz $ 5.98
200 oz $13.68http://www.ebook777.com
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