Ive Tried to do this problem but I cant seem to get it, can someone please help me out? (Problem in the image)

The variable in a relation who’s value depends on the value of the independent variable is called what?

Atriangle has an area of 72 square inches. if the base of the triangle has a length of 18 inches, what is the height of the triangle? use the formula for the area of a triangle: area = (base)(height) type a numerical answer in the space provided. do not include the units or spaces in your answer.

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)