Chantelle has signed up for hockey. her parents set a limit of 40$ for costs for the season. it costs 25$ to sign up plus 0.75$ for each ice-time. what is the maximum number of ice times chantelle can go?

Okay so the limit is $40.

The equation would be 25+.75x=40

40-25=15

15/.75=20

so x=20

Chantelle can go to the ice a maximum of 20 times with the $40 limit she's given.

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!