19. Let *f *(*x*) = *x*2 **+ **14*x *+ 53.

(a) Find the vertex. Answer: ________

(b) State the range of the function. Answer: ________

(c) On what interval is the function decreasing? Answer: ________

#### Top Answer

(a) the vertex of the function is at (-7,4) .... View the full answer

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#### Other Answers

f(x) = x 2 +14x +53 f'(x) = 2x+14 (a) To find vertex put f'(x) =0 and find x 2x +14 = 0 => x = -7... View the full answer