George uses mangos (m) and pineapples. (p) to make one jar of fruit salsa. mangos sell at the
market for $4.49 each while pineapples sell for $5.00 each. he uses the expression 4.49m + 5p
to determine the amount it costs him to make each jar of fruit salsa. an expression to show how much it would cost george to make n jars of fruit salad.

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