Let x represent the number of hours.
Let the function f(x) represent the total amount charged by Electrician A, as a function of the number of hours, x.
Let the function g(x) represent the total amount charged by Electrician B, as a function of the number of hours, x.
It is given that Electrician A is offering services for an intial fee $50 and $12 per hour. Hence, the function that represents this is a linear function:

It is also given that Elec