"What are the possible values for x that result in 800 square feet of space for the dogs? Show all your work." 800=x(60-x)

i think the answer is 40 and 20 but i want to see someone else's work. thank youu

What is a rational number between 9.5 and 9.7

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?

Find the value of x. round the length to the nearest tenth