Please helppppppp!!!!!!
1.Ernesto has $70 in a savings account that earns 10% interest, compounded annually.
To the nearest cent, how much will he have in 2 years?
2. Sandra has $60 in a savings account. The interest rate is 5%, compounded annually.To the nearest cent, how much interest will she earn in 2 years?
3.Emmet deposited $90 in a savings account earning 10% interest, compounded annually.To the nearest cent, how much interest will he earn in 3 years?