Brittany will be working full time this summer to save for her goal of having $10,000 by the time shes 21. Brittany has an accou
nt that will pay 3.5% interest, compounded monthly. She'll turn 17 at the end of the summer. About how much will brittany have to deposit at the end of the summer so that her money can grow into $10,000 but the time shes 21?