You mow the lawn to earn your allowance. each time you mow the lawn you earn \$12$12dollar sign, 12. write an equation for the number of dollars, ddd, you earn when you mow the lawn mmm times.

For this case, the first thing we must do is define variables.
 m: number of times you cut the grass
 d: amount of dollars you earn.
 We now write the linear equation that models the problem:
 d = 12m
 The slope of the line is 12, which means that each time you cut the grass, you earn 12 dollars.
 
 an equation for the number of dollars, d, you earn when you mow the lawn m times is:
 d = 12m

Xis equal to three