The answer to the question is 9
The car gets 34 miles per gallon (476/14 = 34)
d=578
g=gallons needed
34 = miles per gallon
Solving for g......
578 = 34g
578/34= g
<span>g = 17</span>
This is how y=x+7 and y=2x+1 would look like. I also included the table in case you need to graph it.