To determine your earnings per hour, we start with the equation:
\[ 40y = 280 \]
Here, \( y \) represents your earnings per hour. We can solve for \( y \) by dividing both sides of the equation by 40:
\[ y = \frac{280}{40} \]
Calculating that:
\[ y = 7 \]
Thus, your earnings per hour are $7.00.