Lesson: Variables and Constants

The equation shows the relation between the number of socks and the number of shoes Michael owns, where represents the number of socks, and represents the number of shoes. If Michael has 5 socks, how many shoes does he have?

The equation shows the number of cakes Michael baked in relation to the number of hours he spent baking them. The variable represents the number of hours spent baking the cakes, and the variable represents the number of cakes baked. How many cakes did Michael make if he spent 7 hours baking?

The equation can be used to calculate the total number of CDs Elizabeth had listened to days after she started working as a music producer. How many CDs had Elizabeth listened to one day after she started her job?