A ball is thrown from an initial height of 3 feet with an initial upward velocity of 23/fts. The ball's height h (in feet) after t seconds is given by the following. h=3+23t-16t^2
Find all values of t for which the ball's height is 11 feet.

Round your answer(s) to the nearest hundredth.

8(-10x+3.5y-7)

8×-10x + 8×3.5y + 8×-7

-80x + 28y - 56

therefore

-80x+28y-56 is the correct answer

idk bring the function back   im not smart

step-by-step explanation:

$12. that is my answer.

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

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!