Which of the following linear equations has a slope of -5/3? a. 3x + 4y - 5 = 0
b. 5x + 3y + 2 = 0
c. 2x - 5y = -3
d. 6y = 2x + 1
e. 3x + 5y + 4 = 0

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.