If f(x) and g(x) are inverse functions of each other, which of the following statements is true?

a.) f(x) divided by g(x) =1

b.) f(x) = -g(x)

c.) (f•g)(x) = 1 (the back dot does not mean times, it means f of g of x)

d.) (g•f)(x) = x

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?

In order for the function to be linear, what must m be and why? m = 22 because the rate of change is 1. m = 20 because the rate of change is 3. m = 22 because the rate of change is -1. m = 20 because the rate of change is -3.

I’m not good at math can i have ? ?