solve inequalities
sets
interval notation
100

n - 1/2 > 3/4

n > 5/4

100

list all the subsets 

{5, 10, 15}

{ }     {5, 10}

{5}     {5, 15}

{10}    {10, 15}

{15}    {5, 10, 15}

100

x > 3

(3, inf)

200

y/3 < 2

y < 6

200

A is the set of even whole numbers that are less than 18. Write this in roster form and set builder notation. 

set builder: {x | x is an even whole number, x < 18}

roster: {0, 2, 4, 6, 8, 10, 12, 14, 16}

200

x < -2

(-inf, -2)

300

6(c - 1) < -18

c < -2

300

A = {1, 2, 3, 4, 5, 6, 7, 8, 9}

B= {2, 4, 6, 8}

find union and intersections

A U B = {1, 2, 3, 4, 5, 6, 7, 8, 9}

A intersection B = {2, 4, 6, 8}

300

-5 < x <10

(-5, 10)

400

0 < -8b < 12

-3/2 < b < 0

400

There are 15 cats. Ten are striped, 7 are striped and have green eyes. The rest have green eyes but are not striped. How many have green eyes but are not striped. 

5

400

x < 0 or x > 5

(-inf, 0) or (5, inf)

500

5m < -10 or 3m > 9

m < -2 or m > 3