Answer:

Step-by-step explanation:
Given
See attachment for graph
Required
The equation of best fit
First, we pick two corresponding points on the graph,
We have:


Calculate slope (m)

This gives:



The equation is the calculated using:

This gives

Open bracket


The common denominator for 18/24 is 24
Getting at least a 80% ( B average) is also good still very close to 90
Answer:
6 gallons
Step-by-step explanation:
1) $30/10 gallons= $3 per gallon
So...
2) $18/3=<u>6 gallons</u>
<u />
Answer:
4x−2
Step-by-step explanation: