To calculate the simple interest earned on a Certificate of Deposit (CD), you can use the formula for simple interest:
\[ \text{Interest} = P \times r \times t \]
where:
- \( P \) is the principal amount (the initial deposit),
- \( r \) is the annual interest rate (expressed as a decimal),
- \( t \) is the time in years.
Given:
- \( P = 1,150.00 \) dollars,
- \( r = 10% = 0.10 \),
- \( t = 8 \) years.
Substituting the values into the formula:
\[ \text{Interest} = 1,150.00 \times 0.10 \times 8 \]
Now, calculate:
\[ \text{Interest} = 1,150.00 \times 0.10 = 115.00 \]
Then:
\[ \text{Interest} = 115.00 \times 8 = 920.00 \]
Thus, the total interest earned by the end of 8 years is
\[ \boxed{920} \] dollars.