The cost of a student ticket to the school play is $7. Write an equation that correctly relates th total cost, c, for a particular number, s, of student tickets purchased. Identify the independent and dependent variables.
The equation is:
c = 7s
where c is the total cost and s is the number of student tickets purchased.
The independent variable is the number of student tickets purchased (s), and the dependent variable is the total cost (c).