Jared has taken out a loan for his car. his monthly payments amount to $650. if his loan is for 36 months, and he paid a down payment of $400, what is the total cost of the car for jared?

We are given with the data monthly payments amount to $650 for 36 months and a down payment amount of $400. the total cost is equal to the sum of the downpayment and the monthly payment times the number of months. 

Cost = $400 + $650 * 36
COst = $23800

Aand b is what i think