standard_description: Identify when two expressions are equivalent (i.e., when the two expressions name the same number regardless of which value is substituted into them). For example, the expressions y + y + y and 3y are equivalent because they name the same number regardless of which number y stands for.
problem_activity: Hodan is planting flowers around her apartment building. The total distance around her building is 120 feet, and she wants to plant a flower every
$${4{1\over2}}$$
feet.
Let
$$x$$
represent the number of flowers Hodan plants around her apartment building. Write an equation she can use to determine how many flowers she’ll need.


aligns: no