I need help on rational numbers and coordinates planes. I don't quite understand it.

Find the balance at the end of 4 years if 1000 is deposited at the rate of

Listed in the table is the percentage of students who chose each kind of juice at lunchtime. use the table to determine the measure of the central angle you would draw to represent orange juice in a circle graph

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8