Can anyone answer these?

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

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.