Call the price of a book 'b'. We know that lunch cost $3.25 so let's say

we also know the total is $40. So we can write:

or
and then solve for 'b':


A book cost $5.95
56.52 inches because 18 is the diameter and 18 times 3.14 is 56.52
Answer: 2t/12
Step-by-step explanation:The quotient of is the result of dividing two terms
The first term is - Twice a number