The two equations for the gym’s membership fee options are c = 30m + 50 and c = 20m + 100.
In the previous activity, you found the value of the variable m for this system of equations. In this activity, you’ll find the value of the second variable, c, which represents the total membership cost.
You found that the value of m is 5 when the values of c are equal to each other. Substitute this value into the first equation and solve for c. What is the value of c?