1. Write an expression for each of the following: a. the sum of 9 and z

b. the difference between 22 and x

c. 8 less than the quotient of x divided by 7

d. x increased by 10 divided by 4

How can you tell when x and y are not directly proportional?

Jose is going to use a random number generator 500500 times. each time he uses it, he will get a 1, 2, 3,1,2,3, or 44.

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.