Does this chamber represent a function ? why or why not?

No, this does not represent a function. A function is defined: each x value can correspond to only 1 y value. However, the 3 in the x column is corresponding to two y values: 4 and 3. Therefore, this isn't a function.

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!

70

step-by-step explanation: