Maurice’s new cd has 12 songs. each song lasts between 3 and 4 minutes. he estimates that the whole cd is about 30 minutes long. which statement about maurice’s estimate is true?

a) the estimate is half the actual length of the cd.
b) the estimate is less than the actual length of the cd.
c) the estimate is more than the actual length of the cd.
d) the estimate is exactly equal to the actual length of the cd.

The estimate is less than the actual length of the CD.

i would go with the first one

step-by-step explanation:

hope this

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!