For the pair of functions, find the indicated sum, difference, product, or quotient.Let f(x) = 4x2 - 4 and g(x) = x - 2. Find (f - g)(4).

A. 54
B. 66
C. -64
D. 58

Answer: D

Mathematics

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Solve the problem.Suppose a cost-benefit model is given by  where y is the cost in thousands of dollars for removing x percent of a given pollutant. Find the cost of removing 45% to the nearest dollar.

A. $3465 B. $7700 C. $818 D. $6300

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Mathematics

For the given arithmetic series, what is Sn?a1 = 1, d = -3, and n = 10

A. -125 B. -500 C. -250 D. -124

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Mathematics

Estimate the sum as indicated. Then answer the question.Estimate the following sum by first rounding to the nearest hundred. Does the estimate give you reason to doubt the stated sum? 

A. Estimate: 122,200 ; no B. Estimate: 122,200 ; yes C. Estimate: 126,200 ; no D. Estimate: 126,200 ; yes

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Mathematics

Divide and, if possible, simplify.

A. 2a
B. 2a2b2
C. 2a2b2
D.

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Mathematics