4x^2 -6x^6+2x^3+12-5x^3+4x^4 in standard form

Answer this question only if you know the 30 points and

Ineeeeed this is due tomorrow and i dont know the answer can you find all the exponents

Liz is shipping a package to her friend. the maximum weight of a medium flat-rate box is 20 pounds, including the box which weighs 6 ounces. write and solve an inequality to describe the possible weight in pounds, w, of the contents that liz will ship to her friend if she must use a medium flat-rate box. use the drop-down menus to explain your answer.