How do you find the base in the Pythagorean theorem, c=18, a=9, what is b?

Carl wants to buy a television that cost $500 including taxes. to pay for television he will use a payment plan that requires him to make a down payment of $125 and then pay $70.50 each month for six months what is the percent increase from the original cast of the television to the cost of the television using a payment plan.

What is the standard form of -5x^2+2x^4-11+x^3+3x

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