PLEASEEE HELPPP In this expression, Marianne claims that 2x and –x are not like terms because –x does not have a coefficient. Is she correct? Explain your reasoning.
m squared + 2 x minus x + 3 m squared + 2

Lindsay used two points, (x,y; ) and (+2.82), to find the equation of the line, y = mx + b, that passes through the points. y2-y, first, she used the definition of slope and determined that the value of mis x, - . given this information, which expression must represent the value of b?

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

Find the domain and range of the following function f(x) = 51x - 21+ 4