A person places $8230 in an investment account earning an annual rate of 4.1%, 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 15 years.Answer:
Q. A person places $8230 in an investment account earning an annual rate of 4.1%, 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 15 years.Answer:
Identify Given Values: Identify the given values from the problem.Principal P = $8230Rate r = 4.1% or 0.041 (as a decimal)Time t = 15 yearsWe will use the formula V=Pert to find the value V of the account after 15 years.
Convert Rate to Decimal: Convert the percentage rate to a decimal.To convert a percentage to a decimal, divide by 100.r=4.1%=1004.1=0.041
Substitute Values into Formula: Substitute the values into the formula.Using the formula V=Pert, we substitute P=$8230, r=0.041, and t=15.V=8230×e0.041×15
Calculate Exponent: Calculate the exponent part of the formula.rt=0.041×15=0.615Now we have V=8230×e0.615
Calculate e Value: Calculate the value of e raised to the power of 0.615. Using a calculator, we find e0.615≈1.84986.
Multiply Principal by e Value: Multiply the principal by the value of e raised to the power of rt. V=8230×1.84986≈15217.14
Round to Nearest Cent: Round the result to the nearest cent.The value of the investment account after 15 years, rounded to the nearest cent, is approximately $15217.14.