Miguel deposits $470 every month into an account earning an annual interest rate of 8.1%compounded monthly. How much would he have in the account after 30 months, to the nearest dollar? Use the following formula to determine your answer.A=d(i(1+i)n−1)A= the future value of the account after n periodsd= the amount invested at the end of each periodi= the interest rate per periodn= the number of periodsAnswer:
Q. Miguel deposits $470 every month into an account earning an annual interest rate of 8.1% compounded monthly. How much would he have in the account after 30 months, to the nearest dollar? Use the following formula to determine your answer.A=d(i(1+i)n−1)A= the future value of the account after n periodsd= the amount invested at the end of each periodi= the interest rate per periodn= the number of periodsAnswer:
Identify variables: Identify the variables from the problem.d=$470 (the amount invested at the end of each period)i=8.1% annual interest rate, which needs to be converted to a monthly rate by dividing by 12.n=30 (the number of periods, which are months in this case)
Convert interest rate: Convert the annual interest rate to a monthly interest rate. i=12 months per year8.1% per yeari=120.081i=0.00675 (monthly interest rate)
Calculate future value: Use the formula to calculate the future value of the account after n periods.A=d×(i(1+i)n−1)
Plug values and calculate: Plug the values into the formula and calculate the future value.A=470×((1+0.00675)30−1)/0.00675
Calculate exponent: Calculate the value inside the parentheses and the exponent.(1+0.00675)30=1.0067530
Continue formula calculation: Calculate the exponent.1.0067530≈1.22139
Calculate numerator: Continue with the formula calculation.A=470×((1.22139−1)/0.00675)
Calculate future value: Calculate the numerator of the fraction.1.22139−1=0.22139
Round to nearest dollar: Calculate the future value A.A=470×(0.22139/0.00675)A≈470×32.80593A≈15418.7851
Round to nearest dollar: Calculate the future value A.A=470×(0.22139/0.00675)A≈470×32.80593A≈15418.7851Round the future value to the nearest dollar.A≈$(15419)