Final answer:
Leila's earnings are described by a linear equation, E = 50H. To find her earnings after tutoring for 15 hours, the calculation is E = 50 × 15, giving us a total of $750.
Step-by-step explanation:
The equation that relates Leila's earnings, E, to the number of hours, H, she tutors is E = 50H. This is a linear relationship where Leila earns $50 for each hour of tutoring.
Therefore, to calculate her earnings after tutoring for 15 hours, we substitute H with 15 in the equation: E = 50 × 15, which results in E = $750. So, Leila's earnings after tutoring for 15 hours would be 750 dollars.