Help please I really need to solve for x

Mustafa contributes 11% of his $67,200 annual salary to his 401k plan. what is his pretax income

Given the graphed function below which of the following orders pairs are found on the inverse function

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.