Each book is the same size is sold he knows the area of the base of one book is 22 1/2 in.² in each book is 3/4 inches thick the volume of a stack of nine bucks is blank cubic inches

The volume of a stack of nine bucks iscubic inches

Step-by-step explanation:

Area of the base of one book , A=

Height of 1 book = h =

If nine books are stacked together then height of the stack will be :H

H =

So, volume of the stack = V

V = Area of the base × H

Area of base = area of base of the 1 book = A

The volume of a stack of nine bucks iscubic inches

your answer would be 10x - 1