Which of the following quadratic equations has the solution set (-20,9)? select all that apply a. (x+20)(x-9)=0 b. (x-20)(x+9)=0 c. (x-5)(x-4)=0 d. x^2-9x+20=0 e. x^2-11x+180=0 f. x^2+11x-180

Which situation can be modeled by the inequality 5 + 10w ≥ 45? a. you start with $5 and save $10 a week until you have at least $45. b.you start with 5 baseball cards and purchase 10 cards every week until you have at most 45 cards. c.you start with 5 water bottles and purchases cases of 10 water bottles each until you have a total of 45 water bottles. d.you spend $5 plus $10 per week until you have less than $45.