exam Maths Puzzle Numerical Ability

Graph the function for each.

7. f (x) = -2x � 5

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exam Other Question

Can someone help me on this problem?

I need to find the median of this set of numbers:

1, 4, 9, 15, 25, 36

Thank you,
Sher im having trouble with 2 radical 7 over 3 radical 5 + 5 radical 3. I know to multiply the top and bottom by 3 radical 5 + 5 radical 3 but what im getting doesnt seem right.