Discover Questions

We are told satellites exist that can zoom far enough to see what I'm reading. Where's the proof this tech exists? If R is the region bounded by y=2x and y=16(x)^1/4 then what is the volume of the solid generated when R is revolved about the x-axis? How do I calculate 1/6 into a decimal without a calculator? It is 0.167....but how? Is it true that a large asteroid is going to crash to Earth in 2019? Find the zeros of the equation y=x^2-16. I'm having a brain freeze on how to do this. Thank you!?