7.) walter and brian each have a cd collection. walter has x amount of cds whereas brian has 3 times the number in walter’s collection. the total number of cds in both collections is 144. what is x, the number of cds in walter’s collection?

About 400,000 people visited an art museum in december. what could be the exact number of people who visited the art museum?

An episode of a television show is 60 minutes long when it originally airs with commercials. on a dvd without commercials, the episode is only 417 minutes long. how many1-minute commercials did the episode include when it originally aired? write and solve an equation to justify your answer.

An alternative to car buying is to make monthly payments for a period of time, and then return the vehicle to the dealer, or purchase it. this is called