Question 1169621
if you let x equal the number of books, then y = 4x.


the independent variable is x which is the number of books sold.
the dependent variable is y which is the total amount of money raised for the trip.


the answer is in the statement ".....to raise money for a trip."


the price per book needs to be multiplied by the number of books to get the total amount of money raised for the trip.


x is just a variable used to represent the number of books.


once you know the value of x, you know the amount of money raised for the trip.