Let f(x)= -4x-1 and g(x)= x^2+1.
Find (f x g)(7).
(f x g)(7) = __

Step-by-step explanation:

Let f(x)= -4x-1 and

g(x)= x^2+1.

(f.g)(x) = (-4x-1)(x²+1)

-4x(x²+1)-1(x²+1)

-4x³-4x-x²-1

(f.g)(x)= -4x³-x²-4x-1

(f.g)(7) =-4(7)³-(7)²-4(7)-1= -4(343)-49-28-1 = -1372-77-1= -1372-78 = -1450

d (5 x (-20)) * (100 x (0.7))

step-by-step explanation:

5÷1/100 * -.7 *-20

copy dot flip

5*100 * -.7 *-20

rearrange

5*-20   * 100 *-.7

-100   *-70

7000

good job you smart son of a gun you are smarter that einstein. 7