Fx=108 - 13 x^9- 8x^4 + 14x^2+2x^3

Help Please!!

Long division the problem is 40 ➗ 348 = ?

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

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.