Part A: Create a fifth-degree polynomial with four terms in standard form. How do you know it is in standard form? Part B: Explain the closure property as it relates to subtraction of polynomials. Give an example.

Cesar bought 7 items at the candy store. he bought candy bars for $0.50 each and packs of gum for $0.95 each. he spent a total of $6.80. what system represents the solution for the number of candy bars (x) and the number of pack gum (y) purchased?