171 / 7.6 = 22.5 miles per gallon
22.5 x 12.5 = 281.25 miles she can drive
First you need to find the y-intercept, which is y = -1
Next is we need to find the slope of the line > you are going to have to do this by finding to clear point
The ones that I will be using are: (3, 1); (6, 3) (You could take any points)
Now using the slope formula we could find m.
m = y2-y1 / x2-x1
(1 - 3) / (3 - 6) = m
-2 / -3 = m
m = 2/3
Using the linear function format: y = mx + b
Therefore the equation of the line is y = 2x/3 -1
14 ÷ 1/2 × 3 (I hope it's right. I would have done this)
336 divided by 12. The answer is the number of cartons
