What is a polynomial expression?

  a polynomial is an expression consisting of variables (also called indeterminates) and coefficients, that involves only the operations of addition, subtraction, multiplication, and non-negative integer exponentiation of variables. An example of a polynomial of a single indeterminate x is x2 − 4x + 7.

Step-by-step explanation:

hope that help

i believe your answer is 99.7% of 7-year-old children are between 46.6 inches and 49.5 inches tall.

probably .5

i can on others if necessary.