Which of the following are polynomial functions?

What does independent variable and dependent variable mean in math?

What is the factor form of x^2-9x+14

Describe the end behavior of the function below. f(x)=(2/3)^x-2 a. as x increases, f(x) approaches infinity. b. as x decreases, f(x) approaches 2. c. as x increases, f(x) approaches -2. d. as x decreases, f(x) approaches negative infinity.