The western ranges are composed of which two mountain chains? A. the Rocky Mountains and the Laurentian Mountains B. the Appalachian Mountains and the Coast Mountains C. the Rocky Mountains and the Coast Mountains D. the Appalachian Mountains and the Laurentian Mountains Please select the best answer from the choices provided A B С C PL HELP

i am pretty sure it is d have a nice day

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: