Lily has 4 fewer ribbons than dora. lily has 7 ribbons . how many ribbons does dora have ?

Let L represent the number of ribbons Lily has and D be the amount of ribbons Dora has.

Since Lily has 4 fewer ribbons than Dora, the amount of ribbons Lily has can be represented as this:

L = D - 4

Because Lily has 7 ribbons, you can plug in 7 for L:

7 = D - 4

When you solve for the amount of ribbons Dora has (D), which is done by adding 4 to both sides, you get D = 11.

Therefore, Dora has 11 ribbons.

11

explanation: If Lily has 4 fewer ribbons than Dora then you should add 4+7 to get the answer.

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!