Audrey is saving money and plans on making quarterly contributions into an account earning an annual interest rate of 3.8% compounded quarterly. If Audrey would like to end up with $6,000 after 8 years, how much does she need to contribute to the account every quarter, 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. Audrey is saving money and plans on making quarterly contributions into an account earning an annual interest rate of 3.8% compounded quarterly. If Audrey would like to end up with $6,000 after 8 years, how much does she need to contribute to the account every quarter, 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 values: Identify the given values from the problem.A (future value of the account) = $6,000i (interest rate per period) = 3.8% annual interest rate compounded quarterly, which is 43.8% per quartern (number of periods) = 8 years with quarterly contributions, which is 8×4 quarters per year
Convert interest rate: Convert the annual interest rate to a quarterly interest rate. i=4 quarters per year3.8% per year=40.038=0.0095 per quarter
Calculate total periods: Calculate the total number of periods. n=8 years ∗4 quarters per year =32 quarters
Use formula for amount: Use the formula to find the amount invested at the end of each period d.A=d×(i(1+i)n−1)(\newline\)$6,000=d×(0.0095(1+0.0095)32−1)
Calculate inside parentheses: Calculate the value inside the parentheses.(1+0.0095)32−1=(1.0095)32−1
Calculate exponentiation: Calculate the exponentiation.(1.0095)32≈1.349858807576003
Subtract from result: Subtract 1 from the result of the exponentiation.1.349858807576003−1≈0.349858807576003
Divide by interest rate: Divide the result by the interest rate per period.0.349858807576003/0.0095≈36.82724395326347
Solve for d: Solve for d by dividing the future value of the account by the result from the previous step.$6,000/36.82724395326347≈162.974
Round result: Round the result to the nearest dollar. d≈$163