For what value of x is the value of f(x)=4x-2 equal to 18

Someone me what is the area of this figure? 18m 18m 8m 16m

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.

Which angle has the same measure as the dehedral angle formed by the orange face and the purple rectangle