Anyone know the answer?

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

Problem fathi wants to print out a pdf document that is 48 pages long. to save paper, he decides to print on both sides of each sheet and to print two pages on each side of the sheet. how many sheets of paper will he need?

On a piece of paper graft y+2> -3x-3 then determine which answer matches the graph you drew