Eli received $10,000 in gift money when he graduated from high school. He deposits the money into an account with a 5 percent annual interest rate, compounded continuously. Use the formula P(t)=10,000e0.05t

to determine how much money will be in his account in four years. Include cents, if needed.(1 point)

1 answer

To determine how much money Eli will have in his account after four years with continuous compounding, we can use the formula:

\[ P(t) = P_0 e^{rt} \]

where:

  • \( P(t) \) is the amount of money accumulated after time \( t \),
  • \( P_0 \) is the principal amount (the initial amount of money),
  • \( r \) is the annual interest rate (as a decimal),
  • \( t \) is the time in years,
  • \( e \) is the base of the natural logarithm (approximately equal to 2.71828).

In this case, \( P_0 = 10,000 \), \( r = 0.05 \), and \( t = 4 \).

Plugging in these values, we have:

\[ P(4) = 10,000 e^{0.05 \times 4} \]

Calculating \( 0.05 \times 4 \):

\[ 0.05 \times 4 = 0.20 \]

Now plug this value into the equation:

\[ P(4) = 10,000 e^{0.20} \]

Now we need to calculate \( e^{0.20} \):

\[ e^{0.20} \approx 1.2214 \]

Now we can find \( P(4) \):

\[ P(4) = 10,000 \times 1.2214 \approx 12,214 \]

Thus, the amount of money in Eli's account after four years will be approximately:

\[ \boxed{12,214.00} \]