Please answer this question now fast in two minutes

work is shown and pictured

 R = (16, 4)

Step-by-step explanation:

M = (12, 6,5)

R = ???

S = (8, 9)

twenty-six miles over two gallons because the proportion for the original 13 miles to one gallon would be written 13/1 and, doing the same thing to the top and bottom, i multiplied by 2 and got 26/2

you first to choose the points and then move from then as the slope you have