To find out how much Jamal will earn over 7 years at his current rate of pay of $125,000 per year, the correct equation to use is:
d \( y = 125,000 \times 7 \)
This equation calculates his total earnings over 7 years by multiplying his annual salary by the number of years. In this case, it gives:
\[ y = 125,000 \times 7 = 875,000 \]
So the total amount Jamal would earn in 7 years would be $875,000.