A contractor spent $740 at a hardware store on wooden shingles and ceramic tiles. She bought the tiles for $20 per package and the shingles for $60 dollars a package. If she bought 5 more packages of tiles than shingles, how many packs of shingles did she buy?

You are making a battery for a science project. you have copper wire for your first electrode. you need to choose a conductor, a second electrode, and a device to plug into your battery. you have already chosen a lemon conductor. complete each statement below about the options that include a lemon conductor.

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?