Determine whether the situation is linear or nonlinear, and proportional or nonproportional

alberto started out bench pressing 50 pounds he then added 10 pounds every week the situation is linear or nonlinear and proportional and nonproportional

What were mkh company's cash flows from (for) operating activities in 20x1? $(180,300) $233,100 $268,200 $279,400?

Average acceleration: i have no idea how to do this.

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