Which algebraic expression is a polynomial with a degree of 3?

4x3 – StartFraction 2 Over x EndFraction
2y3 + 5y2 – 5y
3y3 – StartRoot 4 y EndRoot
–xyStartRoot 6 EndRoot

Which of these choices show a pair of equivalent expressions?

What is the value of x in the diagram below?

Aclothing store has the sign shown in the shop window. pani sees the sign and wants to buy 3 shirts and 2 pairs of jeans. the cost of each shirt before the discount is $12, and the cost of each pair of jeans is $19 before the discount. write and simplify an expression to find the amount pani pays if a $3 discount is applied to her total