Amusic teacher runs a guitar class for 20 weeks. the class meets each week in a rented music studio. suppose that:

it costs the teacher c dollars to rent the studio for the 20 weeks.
the class contains n students.
each student pays the teacher a single fee of f dollars for the course.
the teacher makes a profit of p dollars at the end of the course.

suppose that c = 400 and f = 70. write an equation to show how the profit made, p, depends on n, the number of students attending.
graph your equation and explain the significance of the point where the graph crosses the horizontal axis.
write a formula for calculating p when you know c, n, and f.
write a formula for calculating f when you know c, n, and p
i have been trying to do this for hours