Use the direct variation model to find each of the following.Suppose m varies directly as n.(a) Find an equation that relates m and n if it is known that m = 35 when n = 5(b) Use this equation to determine m if n is 9.
A. (a) m = 7n
(b) m = 49
B. (a) m = 5n
(b) m = 25
C. (a) m = 9n
(b) m = 81
D. (a) m = 7n
(b) m = 63
Answer: D
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