What two steps would you use to solve the following equation:

12x - 6 = 18

a. divide by 12

b. subtract 6

c. multiply by 12

d. add 6

Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.

Which expression is equal to (f+g)(x)?

Look at the figure xyz in the coordinate plane. find the perimeter of the figure rounded to the nearest tenth.