Sammy bought 3 t-shirts for $15.75 each and pairs of jeans for $28.79 each. if the sales tax on his purchases totaled $5.24, how much money did sammy spend in all?

Astudent draws two parabolas both parabolas cross the x axis at (-4,0) and (6,0) the y intercept of the first parabolas 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