Answer:
Here, h represents the number of hours for which Grayson charges more than Ian,
Grayson charges $35 per hour plus a $35 administration fee for tax preparation.
Thus, the charges of Grayson after h hours = ( 35h + 35 ) dollars,
Also, Ian charges $45 per hour plus a $15 administration fee,
Thus, the charges of Ian after x hours = ( 45x + 15 ) dollars,
⇒ 35h + 35 > 45x + 15
⇒ 35 - 15 > 45x - 35x
⇒ 20 > 10x
⇒ 2 > x
Hence, for the hours less than 2 ( and more than equal to 0 ) Grayson charge more than Ian.