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# 10 Algebra Problems : Writing Equations from Word Problems and Inequalities

Page 211 & 212

Write a formula that describes the function for each of the following.

# 8 A developer price condominiums in Florida at \$ 20,000 plus \$ 40 per square foot of

Living area. Express the cost C as a function of the number of square feet of living area S.

# 10 With a GM Master card 5 % of the amount charged is credited toward a rebate on

The purchase of a new car. Express the rebate R as a function of the amount charged A.

Solve this problem

# 83 Threshold weight. The threshold weight for an individual is the weight beyond

which the risk of death increases significantly. Middle-aged males the function W (h) =

0.000534h/3 expresses the threshold weight in pounds as a function of the height h in

inches. Find W (70). Find the threshold weight for a 6`2" middle aged male.

Page 441 & 442

Determine which of the points following each inequality satisfy that inequality.

# 13 y < x + 4

#14 y < 2x + 2

#15 y > --x + 3

# 16 y < -- 2x +1

#27 y > 2

# 28 y < 7

#45 3x - 4y < --12

# 46 4x + 3y > 24

#### Solution Preview

Page 211 & 212

Write a formula that describes the function for each of the following.

# 8 C=\$20,000+\$40*S

# 10 R=0.05*A

# 83 It seems that the function is W (h) = 0.000534^h/3
W(70)=0.000534^70/3=183.16
6'2"=6*12+2=74
W(74)=0.000534^74/3=216.39

Determine ...

#### Solution Summary

Writing Equations from Word Problems and Inequalities are investigated.

\$2.19