One night a theater sold 540 movie tickets. An adult's ticket costs $8 and a child's ticket costs $5. In total, the theater earned $2880. How many adult tickets and child tickets were sold?

Mrs. gehrke said cheddar weighs 16.8 pounds. he actually weighs 15.2 pounds. what is the percent error?

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)

What is 6/10 rounded to the nearest half