15. A family is comparing different car seats. One car seat is designed for a child up to and including 30 lb. Another car seat is designed for a child between
15 lb and 40 lb. A third car seat is designed for a child between 30 lb and 85 lb,
inclusive. Model those ranges with compound inequalities. Which car seats are
appropriate for a 32-Ib child?

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