Ineed some on this, my teacher left us homework without explaining most of it. can yall explain it

Asap (explain how you got it as well for brainliest)i tried 1: 2 and 2: 3 and they were wrong.picture of figure: in the figure below, the segment is parallel to one side of the triangle. the ratio of 12 to y is1: 21: 31: 42: 3

Credit card a offers an introductory apr of 3.4% for the first three months and standard apr of 15.7% thereafter,

Janet is rolling a number cube with the numbers one through six she record the numbers after each row if she rolls of keep 48 times how many times should she expect to roll a 4