Which of the following sets could be the sides of a right triangle?
a. {2,3, sqrt of 13}
b. {2,2,4}
c. (1,2, sqrt of 3 wouldn't it be b because it has all even numbers?

The system of equations graphed below has how many solutions? y = 2x + 2

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?

Use the method of cylindrical shells to find the volume v generated by rotating the region bounded by the curves about the given axis. y = 7ex, y = 7e^-x, x = 1; about the y-axis