CALCULUS: The graph of y = f ′(x) is shown below. List the intervals where the graph of f is increasing. A. (–4, –2)
B. (–4, 0)
C. (0, 4)

No fake answers & please explain.

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm