Use substitution to combine equations. rewrite so that one side is equal to 0.

Using substitution, I merged the two equations setting them equal to each other:

Then, in order to make one side zero, all you have to do is subtract 3 from each side.

Your answer would be:

answer: on graphs, the open and closed circles, or vertical asymptotes drawn as dashed lines us identify discontinuities.

as before, graphs and tables allow us to estimate at best.

when working with formulas, getting zero in the denominator indicates a point of discontinuity.

when working with piecewise-defined functions, check for discontinuities at the transition points where one piece ends and the next begins.

step-by-step explanation: