Ben drives 405 miles on 15 gallons. how many miles does ben drive on one gallon?
a) 4.05 miles per gallon
b) 27 miles per gallon
c) 1 over 27. miles per gallon
d) 405 miles per 15 gallons

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (–4, 0) and (6, 0). the y-intercept of the first parabola is (0, –12). the y-intercept of the second parabola is (0, –24). what is the positive difference between the a values for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth