Question

Presley is organizing the school book sale. Each stall will have 40 books on the shelf and 2 boxes of books with b books inside. Presley also has 200 books in inventory to refill the shelves as books sell. This situation can be written as the following expression:

40s + (2b)s + 200

How many books should Presley have ready if she plans to open 8 stalls and have 12 books in each box?

520
712
820
1,622

Answer 1

She needs to have 712 books on hand to open 8 stalls.

Answer 2

so if s=8 and b=12

40(8)+(2*12)*8+200
320+(24)*8+200
192+520
712 books needed