Ingrid walked her dog and washed her car. The time she spent walking her dog was one-half the time it took her to wash her car. It took Ingrid 24 minutes to walk the dog. How long did it take Ingrid to wash her car? Use the variable w to represent how long it took Ingrid to wash her car.

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!

6x = 48

i hope this . 6 cards each and a total of $48. dvide each side by 6 and you will have your answer.