Juan starts a new coffee shop. The table shows the coffee sales at his shop for the first 5 days.

Coffee Sales Day 1, $180,Day 2,$220, Day 3, 240, Day 4, $280, Day 5, $310
What is the average rate of change in the sales per day between the 2nd and 5th day?

To find the average rate of change in sales per day between the 2nd and 5th day, we need to calculate the total change in sales and divide by the number of days.

Total change in sales = Sales on Day 5 - Sales on Day 2
= $310 - $220
= $90

Number of days = 5 - 2
= 3 days

Average rate of change = Total change in sales / Number of days
= $90 / 3
= $30

Therefore, the average rate of change in sales per day between the 2nd and 5th day is $30.