grandma has some special plant food that comes in powder form. she uses three scoops to feed nine plants. using the same strength, how many plants can she feed?

answer: standard form is ax^2 + bx + c = 0

step-by-step explanation:

standard form is ax^2 + bx + c = 0

(2x + 1)(x - 2) = 0

distribute to get into standard form

2x^2 - 4x + x - 2 = 0

2x^2 - 3x - 2 = 0

a = 2, b= -3, c = -2

a is your answer

what i would say the best answer is a. 40.5

b, i believe, but not sure.