I know the answer is (1,-1) but how do you get this answer?

The volume of a cube is 8 in to the 3rd power. how long is each side?

When you have 25 numbers, and jake picks 3 random numbers and puts them back, what is the chance bob has of picking those 3 numbers when he picks 6 random numbers (without putting them back)? explain.

Which is the standard form for this number? (2 x 10) + (5 x 1) + (8 x 1 10,000 )