In Chick Fil A it costs $5 for waffle fries and $2 for an ice cream cone. You can spend a maximum of $30. The equation that relates the number of waffle fries and ice cream cones is 5w + 2c = 30 If you purchase 5 ice cream cones, how many waffle fries can you buy?

30 people weigh 160 pounds or more

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!

susie has 7 apples