Consider the plot created from the residuals of a line of best fit for a set of data.
does the residual plot show that the line of best fit is appropriate for the data?
yes, the points have no pattern.
no, the points are evenly distributed about the x-axis.
no, the points are in a linear pattern.
yes, the points are in a curved pattern.

22

step-by-step explanation:

ab will be equal to

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!