A person places $634 in an investment account earning an annual rate of 6.4%, 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 13 years.Answer:
Q. A person places $634 in an investment account earning an annual rate of 6.4%, 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 13 years.Answer:
Identify Given Values: Identify the given values from the problem.Principal P = $634Rate of interest r = 6.4% or 0.064 (as a decimal)Time t = 13 yearsWe will use the formula V=Pert to find the value of the account after 13 years.
Convert Rate to Decimal: Convert the percentage rate to a decimal.To convert a percentage to a decimal, divide by 100.r=6.4%=1006.4=0.064
Substitute Values: Substitute the values into the formula. V=634×e(0.064×13)
Calculate Exponent: Calculate the exponent part of the formula.0.064×13=0.832
Calculate eExponent: Calculate e raised to the power of the exponent.e0.832 (This calculation requires a scientific calculator or software that can compute e to a given power.)
Multiply Principal: Multiply the principal by the result from Step 5.Assuming e0.832≈2.2996 (using a calculator)V=634×2.2996
Perform Multiplication: Perform the multiplication to find the final value.V≈634×2.2996≈1457.9984
Round Final Value: Round the final value to the nearest cent. V \approx \$(\(1457.9984) \approx \$(\(1458\).\(00\))