Question 515417
A tutor charges $40 plus $2/minute to do algebra homework.
Cost = 2*x + 40, where x is the number of minutes.
Sam's problem took 10 minutes to solve, so his cost was:
C = 2(10) + 40 = 60.
.
{{{ graph(500,500,-10,60,-10,180,2*x+40) }}}