Explain what probability is

How do you answer this question? (step by step)

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?

How do businesses a country's economy? a. by investing in goods and services b. by increasing the unemployment rate c. by making profits