Andrew and Liza like to bike the path around their town park. The path is 5 miles long. Last month Andrew bike the path 12 times, and Liza biked it 19 time. How many more miles did Liza bike than Andrew last month?

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!

9x

the surface area is 124cm²

step-by-step explanation:

length: 4cm

width: 9cm

height:   2cm