A To rent a certain meeting room, a college charges a reservation fee of $36 and an additional fee of $9.90 per hour. The film club wants to spend less than
$85.50 on renting the meeting room.
What are the possible amounts of time for which they could rent the meeting room?
Use e for the number of hours the meeting room is rented, and solve your inequality for t.

Apinhole camera is made out of a light-tight box with a piece of film attached to one side and pinhole on the opposite side. the optimum diameter d(in millimeters) of the pinhole can be modeled by d=1.9[ (5.5 x 10^-4) l) ] ^1/2, where l is the length of the camera box (in millimeters). what is the optimum diameter for a pinhole camera if the camera box has a length of 10 centimeters