John's manager wanted to figure out how much to charge for a table that just arrived. If the wholesale price of the chair is $240 and John's store marks up all the furniture by 80%, at what price should the manager sell the chair?

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

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10

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