Question

If Sarah works at the concession stand for 2 hours, she’ll earn $15.50, but if she works for 4 hours, she’ll earn $31.00. Find the rate of change. Write your answer in decimal form. $ per hour

Answer 1

The rate of change for Sarah's earnings is $7.75 per hour.

Step-by-step explanation:

The rate of change is calculated as the change in earnings divided by the change in hours:

Rate of change = (Change in earnings) / (Change in hours).

Given that Sarah earns $15.50 for 2 hours and $31.00 for 4 hours, the calculations are as follows:

Rate of change = ($31.00 - $15.50) / (4 - 2).

Simplifying:

Rate of change = $15.50 / 2.

Therefore, the rate of change is $7.75 per hour, representing the amount Sarah earns for each additional hour worked at the concession stand.