3a-2a²-1) -(-2a²-2a²+1​

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?

Which type of graph would allow us to compare the median number of teeth for mammals and reptiles easily

If sin(x) = 0 and cos(x) = 1, what is tan(x)?