What's the answer to this question?

Write an algebraic expression to match each statement a. four less than 8 times a number b. twice the difference of a number and six c. nine from a number squared

Acarton of juice contains 64 ounces miss wilson bought six cartons of juice how many ounces of juice did she buy

Which of the following is equal to the rational expression when x is not equal to -2 or -6?