The art teacher has 7 bottles of glue that are 2/5 pull he combines them so he will

Hi,

Since each bottle of glue has 2/5 of the entire thing, you would have to multiply 7 x 2/5

7 x 2/5 = 2.8.

The art teacher can have 2 full bottles of glue. Since 0.8 is left over, we can't just leave that out. So we need to have another bottle. 

The final answer is 3 bottles of glue. Hope this helped and have a nice day!

12 pack of pens for $1.09

m packs =  1.09*m = 1.09m

1 composition book = $2.79

n composition books = 2.79*n = 2.79n

Total cost = (1.09m + 2.79n)

Since there is a discount of 5%, the net price would be: 100% - 5% = 95%

Net Cost = 0.95*(1.09m + 2.79n)

Cindy's bill =    $ 0.95*(1.09m + 2.79n)