1. George's Gentle Giants (GGG) rents out horses. It costs GGG $3,000 as a fixed cost every year to maintain the appropriate buildings and equiment. It also costs them $200 per horse per year to take care of the horses. GGG estimates that if they want to rent out x horses each year, they should charge p = 5000 - 25x dollars per year per horse. What is the marginal profit function for George's Gentle Giants' yearly horse rental? Penny's Precious Porcelain (PPP) sells porcelain figurines. The function S(t) gives the total dollar amount in sales that PPP has made over the years, where t is in years since the shop's opening. What do each of the equations below mean in this context? (a) S(20) = 2500000 (b) S' (20) =-250000 (c) S"(20) = 25000