The height of a cylinder is twice the radius of its base.

What expression represents the volume of the cylinder, in cubic units?
a. 4piX^2
b. 2piX^3
c. piX^2 + 2x
d. 2 + X^3

During your cycling trip, you and your friends often stayed in hostels. the prices of these are listed below. hostel standard room (price per night) with breakfast (price per night) super sleep hostels £22.45 £28.65 normandy nights £18.55 £25 zzzola hostels £24.50 £30.99 belgian beds £11.20 £18.55 night-time rest days ? £33 what is the range in cost for a single night, including both standard room prices and with breakfast prices?

Elena is paid a constant rate for each hour she works. the table shows the amounts of money that elena earned for various amounts of time that she worked.

Math question.. plz me .. best answer all