A discount airline sells a certain number of tickets, ,

for a flight for $90 each. It sells the number of

remaining tickets, y, for $250 each. For a particular

flight, the airline sold 120 tickets and collected a total

of $27,600 from the sale of those tickets. Which

system of equations represents this relationship

between x and y?

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