Can someone translate these into equations?!?!

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

Ou have a 20-ounce bottle of juice. you pour out 14 of the bottle to share with a friend. if you pour out 3 ounces for yourself, what fraction of the 20 ounces will be left in the bottle? clear check 35 25 12 1320

To which set of numbers does the number –5 belong? select all that apply. integers natural numbers rational numbers real numbers whole numbers