How many roots does the polynomial equation have? 2x + 6x^4 - 3x² + x^2 - 9x - 1=0

A. 5
B. 9
C. 1
D. 6

What is the mean of the data set 125, 141, 213, 155, 281

Roderick wants to draw a circle for which the numerical value of the circumference is greater than the value of the area. which lengths could he use for the radius? check all that apply

Explain how you can show five less than a number using algebraic expression