Given the cost function C(x) = 27x + 10,000 and the revenue function R(x) = 43x, find the number of units × that must be sold to break even.

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.

If you prove that ∆wxz is congruent to ∆yzx, which general statement best describes what you have proved?

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart