Answer:
She enrolled in the dance classes for 20 weeks
Explanation:
* Margo paid $550.00 for dance classes
* She paid a $50.00 registration fee
* She paid $25.00 for each week she was enrolled in the classes
* We need to find the number of weeks w she enrolled in the
dance classes
Lets write an equation of these information and solve it
∵ The registration fee = $50
∵ The cost of of each week = $25
∵ The number of weeks = w
She will pay $50 plus $25 times the number of the weeks
∴ She paid in the dance classes = 50 + 25 w
∵ She paid $550 for the dance classes
∴ 50 + 25 w = 550
The equation is 50 + 25 w = 550
Lets solve the equation
∵ 50 + 25 w = 550
Subtract 50 from both sides
∴ 25 w = 500
Divide both sides by 25
∴ w = 20
∵ w represents the number of the weeks
∵ w = 20 weeks
She enrolled in the dance classes for 20 weeks