Write an expression for 267 multiplied by x

new to expressions, if you can a explanation is greatly appreciated. if not that completely fine!

Given: pqrs is a parallelogram prove: pr and qs bisect each other at t

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

Hundred and tens tables to make 430 in five different ways