The sum of a number n and 9 is greater than 20.

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 much orange juice do you need to make 2 servings of lemony orange slush?

The function f(x) = 14,600(1.1)* represents the population of a town x years after it was established. what was the original population of the town?