The capacity of an automobile cooling system is 16 quarts. it is half full of a 15% antifreeze solution. the owner is adding 2 gallons of a 90% solution (remember, 1 gallon = 4 quarts). when he is finished, what will the solution's percentage value be?

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

the first dot plot best represents the data

plzplzplzplz mark brainliest and have a good day