Suppose there are 15 people in a room. each of those 15 shakes hands exactly once with everyone else. how many handshakes take place?

How many times greater is the value of the digit 6 in 659,451 than the value of the digit 6 in 751,632?

The express train from Addington to Summit travels the 18 - mile route at an average speed of 72 mi./hr., stopping only in Summit. The local train stops for 1.5 minutes at each of the 6 stops between these two locations, and it averages 54 mi./hr.

Find two positive consecutive odd integers whose products is 99.

Solve x divided by six equals eight.

Jayden and Carson are selling T-shirts and sweatshirts for a fundraiser. Jayden sells 9 T-shirts and 3 sweatshirts for $420. Carson sells 1 T-shirt and 6 sweatshirts for $296. Solve the system of equations for this situation. using elimination

How is the equation y=2x similar to the equation y=2x+3 in the equation problem? How is it different?

Logan and her friend went out to dinner and spent $18.50. They left a tip of $2.59.

Original cost minus the 10% discount

What can you determine about the number of terms of the sum?

A group of three friends went to lunch. The bill, before sales tax and tip, was $45.50. A sales tax of 9%was added. The group then 20% on the amount after the sales tax was added.