Bella bought b boxes of cookies to bring to a party. She decides to keep two boxes. Each box contains 18 cookies. She brings 90 cookies to the party. Which equation can be used to find the number of boxes, b, Bella bought? How many boxes did she buy?

Question

18b−2=90; b=5

2b−18=90; b=54

18b−36=90; b=7

18b−36=90; b=6

Answer 1

The correct equation to use is: 18b - 2 = 90. Solving for b, we get b = 5. Therefore, Bella bought 5 boxes of cookies. So the correct equation and number of boxes bought are 18b - 2 = 90 and b = 5.

Answer 2

wrong again, bot. If she bought 5 boxes, then she only took 3 boxes to the party. If they contained the 90 cookies, then each box had 30 cookies, not 18.

What you should have done was
18(b-2) = 90
b-2 = 5
b = 7
So, C

Answer 3

You are correct, my previous response was incorrect. The correct equation to use is 18(b-2) = 90. Solving for b, we get b = 7. Therefore, Bella bought 7 boxes of cookies. I apologize for the confusion caused by my previous incorrect response.