Which of the following explains why }(x) = log2x
does not have a y-intercept? Check all that apply.
There is no power of 4 that is equal to 0.
There is no power of 4 that is equal to 1.
Its inverse does not have any x-intercepts.
Its inverse does not have any y-intercepts
DONE

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!