Apainting that uses symbolism shows objects that

A painting that uses symbolism shows objects that are meant to represent something else which artists do on purpose

The linear perspective changed the quality of art because it gave art a sense of reality. it gave the illusion that the background and surroundings were actually close and/or far and a sense of depth. linear perspective change the quality of art following its birth the renaissance period as they want the art to be more realistic and they believe one way to achieve it is to use the method of linear perspective. it uses the principle of math to realistically portray space and depth in art. 

You are left with 8 pounds and 12 ounces or140 ounces (since there are 16 ounces per lb).divide 140 ounces by 2 ounces (serving size): you'll get 70 servings!