13+2(4s-3) = -1 what does s equal

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

Last one and the bottom answer choice is y=(x-4)^2+1 you guys!

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