Find the sum of the first six terms of the geometric sequence with a1 = 2 and a2 = -4

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?

At your job you're paid $50 per week plus $3 per sale at least how many saled do you need to make in order to have over $250

Which shows how to solve the equation 3/4x=6 for x in one step?