A family buys 4 airline tickets online. The family buys travel insurance that costs ​$19 per ticket. The total cost is ​$716. Let x represent the price of one ticket. Write an equation for the total cost. Then find the price of one ticket.

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