Edward C. answered 04/20/15
Tutor
5.0
(438)
Caltech Grad for math tutoring: Algebra through Calculus
The cost to rent the room for t hours is given by $41 + t*$6.80
To spend less than $102.20 ==>
6.8*t + 41 < 102.2
6.8*t < 61.2
t < 9