Final answer:
Kyle will need to work 3 hours at $15 per hour to earn a total of $45.
Step-by-step explanation:
The student has asked how many hours it will take to earn $45 when working at a pay rate of $15 per hour. To solve this, we divide the total amount the student wants to earn, $45, by the hourly wage, $15 per hour. The calculation is as follows: $45 ÷ $15 per hour = 3 hours. Kyle will need to work for 3 hours to earn $45 at the drugstore.