I need help with number 12 I’ll rate 5 stars if you help

Select the quadratic that has root x = 8 and x = -5

Boris needs to buy plastic spoons. brand a has a box 42 spoons for $2.37. brand b has a box of 72 spoons for $3.57. find the unit price for each brand. then state which brand is the better buy based on the unit price. round your answer to the nearest cent.

Is there an x intercept in the equation 60*1.15^x