Me plz, my report crads comes out tommoroow!

what is 4y divided by 2 + (8x + 10)

key: x= 6 and y= 17

Cam bought some used books for $4.95. he paid $0.50 each for some books and $0.35 each for the others. he bought fewer than 8 books at each price. how many books did cam buy?

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class

Acompany charges $0.10 for each letter engraved. bobby plans to spend no more than $5.00 on the engraving on a jewelry box. write and solve an inequality to find the maximum number of letters he can have engraved.