Consumer Math

Peter decided to shop for furnishings for a new house.They choose items that amount to $1,600.00.The store has 2 simple interest options for purchasing:

Option 1: 20% down payment and financing at 6.4% simple interest per year for 2 years.

Option 2:no down payment and financing at 6.5% simple interest for 3 years.

Answer each of the following questions separately, showing all your work to reach each answer.

Which option will result in smaller total finance charge?

Which option will result in the smaller monthly payment?

If they decide to defer any purchases and take a $1,600 bonus that Maria will be getting from work and invest it at 2.5% per year simple interest, how long will it need to be invested to earn $250 interest

If they decide to defer any purchases and invest the $1600.00 bonus at 1.5% interest compounded every month, how much interest will they earn in 3 years?