The height of a triangle is 2 less than 5 times its base. if the base of the triangle is x feet, and the area of the triangle is 12 square feet, which equation models this situation? a. 25x^2-10x-24=0 b. 5x^2-2x-24=0 c. 5x^2-2x-6=0 d. 5x^2-2x-12=0

it is c

step-by-step explanation:

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

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