Charles buys 30 packs of pens. There are 18 pens in each pack. Each pack costs £4.50. Charles sells each pen for 80p but he only manages to sell 5 6 of the pens. How much profit did he make?

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

You are updating your garage and the only thing left to paint is your garage day. you're only going to paint the slide that faces the street. the garage door is 9 fert 8inches tall and 120 inches wide. you need to know the surface area of the side of the garage door to determine how much paint to buy. the hardware store sells paint by how much covers a square foot. what is the surface area you should report to the hardware store what is the answer

What is the y-intercept of the line given by the equation