A retail store is having a sale on toilet paper. At 4:00 pm, the store has sold 15 packs of toilet paper. At 7:00 pm, the store discovers it has sold 57 packs. What is the average rate of change between these hours?

Respuesta :

Answer:

14.25 packs per hour

Step-by-step explanation:

it is 4 hours from 2:00-5:00 so... 57÷4=14.25 packs per hour