For what value of x does the function f(x) = x3 – 9x2 -120x +6 have a relative(local) maximum?

One expression below in undefined, and the other expression has a well defined value. which expression is undefined and explain why it has no value. which expression is defined? what is the value of that expression and how do you know? what is a different expression using a trig inverse function that is also undefined?

Read the equations in the table below. then drag a description of the situation and a table to represent each equation. indicate whether each of the relationships is proportional or non-proportional.

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2