To reduce a number to a number to a specified number of digits, without rounding it. You simply cut it off

answer:

125 yards

explanation:

75+50=125. that is my answer

make sure you have version 2.50

try looking in the very back of the book : )

step-by-step explanation:

you can download it here

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!