Nicole invests a sum of money in a retirement account with a fixed annual interest rate of 6 percent compounded continuously. After 17 years, the balance reaches $8,441.60. What was the amount of the initial investment?

Round your answer to the nearest TENs place.

Respuesta :

Answer:

$3,040.00

Step-by-step explanation:

[tex]\boxed{\begin{minipage}{8.5 cm}\underline{Continuous Compounding Formula}\\\\$ A=Pe^{rt}$\\\\where:\\\\ \phantom{ww}$\bullet$ $A =$ final amount \\\phantom{ww}$\bullet$ $P =$ principal amount \\\phantom{ww}$\bullet$ $e =$ Euler's number (constant) \\\phantom{ww}$\bullet$ $r =$ annual interest rate (in decimal form) \\\phantom{ww}$\bullet$ $t =$ time (in years) \\\end{minipage}}[/tex]

Given:

  • A =$8,441.60
  • r = 6% = 0.06
  • t = 17 years

Substitute the given values into the continuous compounding formula and solve for P:

[tex]\implies 8441.60=Pe^{0.06 \times 17}[/tex]

[tex]\implies 8441.60=Pe^{1.02}[/tex]

[tex]\implies P=\dfrac{8441.60}{e^{1.02}}[/tex]

[tex]\implies P=3043.99824...[/tex]

Therefore, the amount of the initial investment is $3,040.00 (rounded to the nearest tens place).