Write a formula that if C3 equals 5 will add up all of the cells in column A. Otherwise, display a blank cell.

Can someone show me the steps to solve the problem?

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 can you determine about the solutions of this system