There are 100 books in the library, divided into four categories. The books' ratio is as follows: 3 science fiction books to every two history books and four history books to every three comic books. The remaining books are art books. How many art books are there in the library, if we know that it holds nine comic books?

What is the perimeter, p, of a rectangle that has a length of x + 8 and a width of y − 1? p = 2x + 2y + 18 p = 2x + 2y + 14 p = x + y − 9 p = x + y + 7

Create a graph for the demand for starfish using the following data table: quantity/price of starfish quantity (x axis) of starfish in dozens price (y axis) of starfish per dozen 0 8 2 6 3 5 5 2 7 1 9 0 is the relationship between the price of starfish and the quantity demanded inverse or direct? why? how many dozens of starfish are demanded at a price of five? calculate the slope of the line between the prices of 6 (quantity of 2) and 1 (quantity of 7) per dozen. describe the line when there is a direct relationship between price and quantity.

When a valve is open 281 gallons of water go through it in one hour the number of gallons that would go through in 94 hours is