A rock is thrown upward from a 28 foot tall cliff and lands in the ocean some time later. The equation −12x2−34x+28 models the rock's path. 1. Calculate the maximum height the rock reached. 2. Calculate when the rock will hit the the ocean.

answer:      

step-by-step explanation:

step-by-step explanation:

10 you would take 50/ .2

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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