a rocketry club is holding a competition. There is a cloud cover at 1000 ft that extends across the sky. The rocket is launched at an initial velocity of 275 ft/sec from a height of 3 feet. The function models of height of the rocket in feet, x seconds after the rocket is launched. Which of the following systems below best represents this situation?

i think asking google will you get the answer to that question

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!