Write the function in the form y = f(u) and u = g(x). Then find dy/dx as a function of x.y = (-2x + 7)3
A. y = u3; u = -2x + 7; 
= -6(-2x + 7)2
B. y = u3; u = -2x + 7; 
= -2(-2x + 7)3
C. y = u3; u = -2x + 7; 
= 3(-2x + 7)2
D. y = 3u + 7; u = x3; 
= -6x2
Answer: A
Mathematics
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