Ariel has a total of 320 points on all four of her exams. If these points are shared equally among the four exams, the result is 80 points per project—which is Ariel’s mean score. What would the average be if the total points was 372?

For each expression use a property to write an equivalent expression.

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (-4, 0) and (6,0). the y-intercept of thefirst parabola is (0, –12). the y-intercept of the second parabola is (0-24). what is the positive difference between the avalues for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth.