1. Olivia jumps from an Olympic diving platform down to the pool below. Her height above the water at any given time after her jump can be modeled by the equation

where is her height above the water (in feet) and is the time in seconds.

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