Solve for X using special rights

You paid 28.00 for 8 gallons of gasoline. how much would you pay for 15 gallons of gasoline?

Select 2 statements that are true about the equation y+6=-10(x-3).1) the slope of the line is -102) the slope of the line is 33) one point on the line is (3,6)4) one point on the line is (3,-6)

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?