Maddie has 4 cups of maple syrup. She uses 1/3 of the syrup to make maple candies. Then, she uses 2/3 of a cup of syrup to make a maple glaze for a ham. How much maple syrup does Maddie have left?

Icould really use some with this question.

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

Identify the parent function that can be used to graph the function f(x)=3(x-9)2