Questions: Nelda deposited 500 in a bank that is paying 2% interest daily. Identify the function P that represents the amount of money she will have after t years. A. P=500 e^0.02 t B. P=500(1.02)^t C. P=500 e^1.02 t D. P=500(1+0.02/12)^12 t E. P=500(1+0.02/365)^365 t

Nelda deposited 500 in a bank that is paying 2% interest daily. Identify the function P that represents the amount of money she will have after t years.
A. P=500 e^0.02 t
B. P=500(1.02)^t
C. P=500 e^1.02 t
D. P=500(1+0.02/12)^12 t
E. P=500(1+0.02/365)^365 t
Transcript text: 23. (L29) Nelda deposited $\$ 500$ in a bank that is paying $2 \%$ interest daily. Identify the function $P$ that represents the amount of money she will thave after $t$ years. A. $P=500 \mathrm{e}^{0.02 t}$ B. $P=500(1.02)^{t}$ C. $P=500 \mathrm{e}^{1.02 t}$ D. $P=500\left(1+\frac{0.02}{12}\right)^{12 t}$ E. $P=500\left(1+\frac{0.02}{365}\right)^{365 t}$
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Solution

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Solution Steps

Step 1: Identify the Formula

The formula for compound interest is given by

\[ P = P_0 \left(1 + \frac{r}{n}\right)^{nt} \]

where:

  • \( P_0 = 500 \) (initial deposit),
  • \( r = 0.02 \) (annual interest rate),
  • \( n = 365 \) (number of compounding periods per year),
  • \( t \) (time in years).
Step 2: Substitute the Values

Substituting the known values into the formula, we have:

\[ P = 500 \left(1 + \frac{0.02}{365}\right)^{365t} \]

Step 3: Calculate the Amount After 1 Year

To find the amount after \( t = 1 \) year, we substitute \( t = 1 \) into the equation:

\[ P = 500 \left(1 + \frac{0.02}{365}\right)^{365 \cdot 1} \]

Calculating this gives:

\[ P \approx 510.1003905164615 \]

Thus, the amount after 1 year is approximately \( 510.10 \).

Final Answer

The correct answer is E. \( P = 500\left(1+\frac{0.02}{365}\right)^{365 t} \)

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