Assume f(x)=2x+8 and g(x)=5. what is the value of (f+g)(3).

assume f(x)= -2x+8 and g(x)=5x. what is the value of (f o g)(3).

For f(x)=2x+1 and g(x)= x^2 -7, find (f•g)(x)

Estimate the area under the curve f(x) = 16 - x^2 from x = 0 to x = 3 by using three inscribed (under the curve) rectangles. answer to the nearest integer.

Acyclist bike x distance at 10 miles per hour .and returns over the same path at 8 miles per hour.what is the cyclist average rate for the round trip in miles per hour ?