In a certain chemical the ratio of zinc to cooper is 4 to 19 a jar of the chemical contains 760 grams of cooper how many grams of zinc does it contain ?

An art teacher made a copy of a small painting. to make the painting easier to see the teacher enlarged the area of the painting by 49%. let y respresent the area of the original painting. the expression below is one way to resperesnt the area of the new painting.find two equivalent expressions that would give the area of the new painting y+0.49y