A person places $6520 in an investment account earning an annual rate of 7.7%, compounded continuously. Using the formula V=Pert, where V is the value of the account in t years, P is the principal initially invested, e is the base of a natural logarithm, and r is the rate of interest, determine the amount of money, to the nearest cent, in the account after 14 years.Answer:
Q. A person places $6520 in an investment account earning an annual rate of 7.7%, compounded continuously. Using the formula V=Pert, where V is the value of the account in t years, P is the principal initially invested, e is the base of a natural logarithm, and r is the rate of interest, determine the amount of money, to the nearest cent, in the account after 14 years.Answer:
Identify Values: Identify the given values from the problem.Principal P = $6520Rate of interest r = 7.7% or 0.077 (as a decimal)Time t = 14 yearsWe will use the formula for continuous compounding: V=Pert
Convert Rate to Decimal: Convert the percentage rate to a decimal by dividing by 100.r=7.7%=1007.7=0.077
Substitute into Formula: Substitute the values into the formula. V=6520×e0.077×14
Calculate Exponent: Calculate the exponent part of the formula.0.077×14=1.078
Calculate eResult: Calculate e raised to the power of the result from Step 4.e1.078 (Use a calculator for this step)
Multiply by Principal: Multiply the principal by the result from Step 5.V=6520×e1.078(Using a calculator, e1.078≈2.940)V≈6520×2.940
Perform Final Multiplication: Perform the multiplication to find the final value. V≈6520×2.940≈19168.80