What is the general form of the equation for the given circle?

Select the graph of the solution. click until the correct graph appears. |x| = 3

Lola says these two expressions have the same value. expression a expression b which explains whether lola is correct?

For the functions f(x) = -922 – 2x and g(x) = -32? + 6x – 9, find (f - g)(x) and (f - ).