Class A has 15 pupils and class B has 29 pupils. Both classes sit the same maths test.
The mean score for class A is 35.

The mean score for class B is 36.

What is the mean score (rounded to 2 DP) in the maths test across both classes?

Which of these tables represents a non-linear function?

Calculate the missing value. round the answer to on decimal place. start with 70, increase it by 21%, and end up with

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