exam Maths Puzzle Numerical Ability

Find the mean and the median.
-2, -7/4, 3/4, 4, 9
These are my choices. I came up with Mean 2, Median 3/4 but I am not positive.

Mean 2, Median 3/4
Mean 10, Median 2
Mean 2, Median 2
Mean 10, Median 3/4

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exam Other Question

I have been trying to help my daughter with this problem:
A 6 pointed regular star is formed by two interlocking equilateral triangles. What is the ratio of the area of the entir Write the equation of the line which has y-intercept (0,5) and is perpendicular to the line with equation y=-3x+1.