Answer:
The attorney worked for 32.5 hours in order for his total bill to be $3,500.
Step-by-step explanation:
Let's set up an equation with some variables:
[tex]h[/tex] = hours of service
[tex]T[/tex] = total bill
[tex]T=100h+250[/tex]
Plugging in our given values, we get:
[tex]3500=100h+250[/tex]
And solving for [tex]h[/tex], the hours the attorney worked, we get:
[tex]h=32.5[/tex]