To calculate the interest earned on Joana's savings account, we can use the simple interest formula:
\[ \text{Interest} = Principal \times Rate \times Time \]
Where:
- Principal = $5,500 (the initial amount deposited)
- Rate = 10% or 0.10 (expressed as a decimal)
- Time = 1 year
Substituting the given values into the formula:
\[ \text{Interest} = 5500 \times 0.10 \times 1 \]
\[ \text{Interest} = 550 \times 1 \]
\[ \text{Interest} = 550 \]
Therefore, Joana would earn $550 in interest at the end of the period.