Lily visits 100 patients in a month and records the age of each patient. The pie chart below shows the number of patients she has visited in each age group. How many patients were aged 0-15?

Evaluate the following expression 1/3^2

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

Match the equivalent expressions. x - 3y + 12 12 - 3y - 2x + x + 2x 3x + 2y - 2x + y + 12 3y + 12 3x + y - 12 4y + 3y + 3x - 6y - 10 - 2 x + 3y + 2x - 3x + 7 + 5 x + 3y + 12 5 + 2y + 7x - 4x + 3y - 17