help me..............................................................................
![help me class=](https://us-static.z-dn.net/files/d5f/f0a57e3f45134f31db08b9a8faca4b48.png)
Answer:
$7.50 per box
Step-by-step explanation:
it is a proportional relationship, and one of the points is (4,30) so we can find the slope by doing 30/4
30/4=7.5
$7.50 per box