What does x represent?

15x-12y=13

30x+9y=4

Gas prices in Cook county are at $3.30 per gallon. If a market scientist predicts a 20% increase in the price of gas in the coming month, what will the price of gas be?

How many times does 50,000 go into 374,000,000,000?

48 is what percent of 52?

Jack is building a rectangle or fence for his ferret he has 20 feet of fencing and wants the short side of the fence to be 7/2 ft. How long will be the other side of the fence be

A recreation department bought 12 T-shirts for day camp The department does not have to pay sales tax it paid with a $100 bill how much money did it receive

3x+5-x=2x+7 is infinite real soluction, no real soluction or one real soluction

Select the correct answer. Which of these statements explains the term price? A. the money spent by a seller to advertise a product B. the money spent by a manufacturer to make a product C. the money spent by a buyer to purchase a product

A polling organization took a random sample of 3,000 middle school students to determine how many have a dog. Suppose that 57% of all middle school students have a dog.

When Sally went bowling, her scores were 108, 72, and 95. If she bowls a 4th game, what will her score need to be to give her an average of 91?

Tanya kicks a ball into the air. The function that models this scenario is f (t) = - 16t2 + 96t, where h is the height of the ball in feet and t is the time seconds. When will the ball hit the ground?