Answer:
a) $2.75 b) $13.75
Step-by-step explanation:
since 8.25 is the total cost of 3 books, inorder to find the cost of 1 book, divide 8.25/3
that equals = $2.75
then we need to find the cost of 5 books, so multiply the cost of 1 book by 5
so 2.75*5 = $13.75
