PLEASE ANSWER THIS FOR MEProfessor Porter talks about the abundance of problems that exist in the world-what problems do you see that exist within your specific community? What kind of business could you create that might help solve these problems? Why and how would this business help? Explain.

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

Y=21.95x+10 y=22.45x solve by substitution

The width of a rectangle is half as long as the length. the rectangle has an area of 18 square feet. what are the length and width of the rectangle?