Which relation is NOT a function? A
{(a, x),(b, x),(d, z),(c, z)}

B
{(a, y),(b, y),(d, y),(c, y)}

C
{(a, x),(b, y),(a, w),(c, z)}

D
{(a, x),(b, y),(d, x),(c, z)}

eww xbox also eww dayz

step-by-step explanation:

just for that im not answering

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!

191 students play sports and ninety-seven 10th graders were surveyed.

step-by-step explanation:

step-by-step explanation: