Solve the problem.Brand X copier has improved its copier so that it produces 20% more copies than its old model. If the old model ran 572 copies per hour, how many copies would the new model run? Round your answer to the nearest whole number.

A. 671 copies per hour
B. 587 copies per hour
C. 686 copies per hour
D. 318 copies per hour


Answer: C

Mathematics

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Add or subtract, as indicated. Assume that all variables represent positive real numbers.9 + 10 + 4

A. 1408
B. 142
C. 9
D. -1408

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Provide an appropriate response.A TV repairman charges $20 plus $25 per hour. Write an equation that represents the cost of repair work if x represents the number of hours and y represents the TV repair cost.

A. y = 45x B. y = 20x + 25 C. y = 25x + 20 D. y = x + 45

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Find the zeros of f(x), given that one zero is k.f(x) = x3 + 4x2 - 2x - 8k = -4

A. -, ±2
B. -4, ±
C. -, ±
D. -4, ±2

Mathematics