Avani went to the store to buy some walnuts. The price per pound of the walnuts is $4.75 per pound and she has a coupon for $3 off the final amount. With the coupon, how much would Avani have to pay to buy 3 pounds of walnuts? Also, write an expression for the cost to buy p pounds of walnuts, assuming at least one pound is purchased.​

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