Someone immediately i'm so done with this

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

If the simple annual interest rate on a loan is 6, what is the interest rate in percentage per month?

These tables represent a quadratic function with a vertex at (0, -1). what is the average rate of change for the interval from x = 9 to x = 10?