I need help simplifying this expression

9•(7-4)^2+9

This question awards 100 ! i really don’t want to fail i will also mark you !

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

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.