Write a cost function for the problem. Assume that the relationship is linear.A cable TV company charges $22 for the basic service plus $7 for each movie channel. Let C(x) be the total cost in dollars of subscribing to cable TV, using x movie channels.
A. C(x) = 7x - 22
B. C(x) = 22x - 7
C. C(x) = 7x + 22
D. C(x) = 22x + 7
Answer: C
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