When all n teams in a league play every other team twice, a total of N games are played, where Upper N equals n squared minus n. A soccer league has 6 teams and all teams play each other twice. How many games are played?

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

Which value is not a solution of 8x^3 – 1 = 0

The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck  $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?