If $M$ and $N$ are the points $(-3,8)$ and $(5,-7)$ respectively, find $MN$.

8 units

11 units

15 units

17 units

Each interior angle of a regular polygon is 168°. Find the number of sides of the polygon.

30

36

24

18

Find the number of sides of a regular polygon whose interior angle is twice the exterior angle.

2

3

6

8

Evaluate correct to two decimal places, 75.0785 - 34.624 + 9.83

30.60

50.29

50.28

30.62

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