Mackenzie deposits $690 every month into an account earning a monthly interest rate of 0.25%. How much would she have in the account after 13 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. Mackenzie deposits $690 every month into an account earning a monthly interest rate of 0.25%. How much would she have in the account after 13 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 Given Values: Identify the given values from the problem.d (the amount invested at the end of each period) = $690i (the interest rate per period) = 0.25% or 0.0025 in decimal formn (the number of periods) = 13 monthsWe will use these values in the formula A=d(i(1+i)n−1) to find A, the future value of the account.
Convert Interest Rate: Convert the interest rate from a percentage to a decimal.0.25%=1000.25=0.0025This is the value of i that we will use in the formula.
Substitute Values into Formula: Substitute the values into the formula.A=690×((1+0.0025)13−1)/0.0025Now we will calculate the value inside the parentheses first.
Calculate (1+i)n: Calculate the value of (1+i)n.(1+0.0025)13=1.002513 We will use a calculator to find this value.
Calculate 1.002513: Calculate the value of 1.002513. 1.002513≈1.033This is the value we will use in the next step of our calculation.
Calculate ((1+i)n−1): Calculate the value of ((1+i)n−1). 1.033−1=0.033This is the value we will use in the next step of our calculation.
Calculate (((1+i)n−1)/i): Calculate the value of (((1+i)n−1)/i). 0.033/0.0025=13.2This is the value we will use in the next step of our calculation.
Calculate Future Value of Account: Calculate the future value of the account, A.A=690×13.2Now we will multiply to find the future value of the account.
Calculate Final Value of A: Calculate the final value of A.A=690×13.2≈9108We round to the nearest dollar as instructed in the problem.