Which of the following is not a us customary unit of volume?
(a) pound. (b)cup. (c) quart (d) gallon

look down

Step-by-step explanation:

Part A

5x 3y^3 2z

I know it is in standard form because there are no more like terms.

Part B: The closure property with regards to polynomials states that polynomials are always closed under multiplication. The coefficients and the exponents can change unlike in addition and subtraction. The variables and coefficients also automatically fit in a polynomial.

Example of multiplication under polynomials.

A*1 = A

A = 6,

6*1=6