
Answer:
 h < 2
Step-by-step explanation:
The charges by Grayson are ...
 35h +35
The charges by Ian are ...
 45h +15
We want to find h for ...
 Grayson > Ian
 35x +35 > 45h +15 . . . . use expressions we found
 20 > 10h . . . . . . . . . . . . add -15-35h
 2 > h . . . . . . . . . . . . . . . divide by 10
Grayson will charge more for less than 2 hours.