How do you do prime factorization. i still dont get it.

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.

If a =6, what is the value of 2a(3b + 5c)?

The longer leg of a 30° 60° 90° triangle is 16 times square root of three how long is a shorter leg