Andrew is a collector of books about planes. He currently has 75 of them and wants to display them in a new bookcase that will fit an equal amount of books on each shelf. In a shop, he spots two bookcases: a 3-shelf and
a 6-shelf bookcase. Each shelf can hold a maximum of 25 books. Which would be the best choice for Andrew
to buy and why?

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.