Explain why mixed numbers is not in a set or integers or whole numbers

F(x)= 1/x-4, g(x)=4x+1/x a. use composition to prove whether or not the functions are inverses of each other. b. express the domain of the compositions using interval notation.

Sole with work in 10 years, the average number of hours of tv watched per week by teenagers dropped from 23.9 to 21.4. find the percent of change.

Find the slope and the y-intercept if there's one and the equation of the line given these two points( 3, 2) and( 3, -4)