If y=Mx+c, where m and c are integers, f(-2)=-5 and f(1)=4,find m and c​

Measures of the angle of r, 31 s (x+4) t (3x+9)

What is the total area of the figure?

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