Can someone please help me answer this?

Find the zero function by factoring (try to show work) h(x)=-x^2-6x-9

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.

Can someone me with my math problems i have a bunch. i will give brainliest and lots of pleeeaaasssee