Solve the problem.The mass (in g) of gold plate on a dish is increased by electroplating. The mass of gold on the plate is given by m = 115 + 20.0t, where t is the time (in h) of electroplating. For what values of t is m between 133 g and 187 g? Graph the solution. 

A. 0.9 < t < 3.6

B. 6.65 < t < 9.35

C. t < 6.65 or t > 9.35

D. t < 0.9 or t > 3.6


Answer: A

Mathematics

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A.

B.

C.

D.

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