Solve the problem. Write the answer in lowest terms and as a whole or mixed number where possible.Find the area of a rectangular banner having a length of 15 feet and a width of 
foot.
A. 
ft2
B. 37
ft2
C. 5 ft2
D. 12
ft2
Answer: D
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Solve the problem.Suppose that the dollar cost of producing x radios is 
Find the marginal cost when 45 radios are produced.
A. $48 B. $12 C. $1545 D. -$1545
Determine whether the fractions are equal.
and 
A. Yes B. No
Find the linear equation that meets the stated criteria.The linear equation y = 435x + 3420 provides an approximation of the annual cost (in dollars) of health insurance for a family of three, where 
represents 1984, 
represents 1985, and so on. Write an equation that yields the same y-values when the exact year number is entered.
A. y = 435(1983 - x) + 3420 B. y = 435(x - 1984) + 3420 C. y = 435(x - 1983) + 3420 D. y = 435(1984 - x) + 3420
Match the graph to one of the polar equations.
A. r = 
B. ? = -
C. r = -
D. ? = 