Perform the indicated operations.Let f(x) = x - 5 and g(x) = 3x + 7. Find (fg)(x) and (fg)(-4).
A. (fg)(x) = 3x2 - 8x + 35; (fg)(-4) = 51
B. (fg)(x) = 3x2 - 8x - 35; (fg)(-4) = -55
C. (fg)(x) = 3x2 + 8x - 35; (fg)(-4) = 45
D. (fg)(x) = 3x2 - 8x - 35; (fg)(-4) = 45
Answer: D
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