#### Answer

Mr. Visconti will charge $33.75 for 3 hours of consulting.

#### Work Step by Step

Given:
Mr. Visconti charges $90.00$ per day, and the day being 8 hours long.
In other words, for 8 hours, the charge is 90.00 dollars.
Thus, for 1 hour, the charge is $\frac{90}{8}$ = 11.25 dollars
Since charge for one hour is 11.25 dollars,
Charge for 3 hours is 11.25 $\times$ 3 = $33.75