Solve the problem.Suppose that y is directly proportional to x and that y = 25.2 when x = 7. Find the constant of proportionality k. Then, find y when x = 12.
A. k = 3.6; y = 43.2
B. k = 176.4; y =
C. k = 3.6; y = 45.6
D. k = 3.8; y = 43.2
Answer: A
Mathematics
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