Notes 9.5 Name_________________ Example How do I use percents to interpret and make circle graphs? What number is 20% of 110? 1. To solve percent equations use the following formula. “What percent of a total is a number?” What percent of a total is a number? 2. Fill in the information you know directly under the formula. What percent of a total is a number? 20% x 110 = n 3. Change the percent to a decimal and multiply to solve. What percent of a total is a number? 20% x 110 = n .20 x 110 = 22 “of” means to multiply “is” means = Key Vocabulary Circle graph – a way to display data as sections of a circle Ray – part of a line beginning with a point and extending in one direction without end Angle – two rays that begin at a common point; measured in degrees Vertex – the common point in an angle (vertices – plural) Your turn What number is 12% of 50?