What rule should jack find for each pattern

Use composition to determine if (x) or h(x) is the inverse of f(x) for the limited domain x2-1.

Suppose a store sells an average of 80 cases of soda per day. assume that each case contains 24 cans of soda and that the store is open 10 hours per day. find the average number of soda that the store sells per hour.

Write two point-slope equations for the line passing through the points (6, 5) and (3, 1)