Christine, Ali, and Juan sent a total of 71 text messages over their cell phones during the weekend. Juan sent 9 more messages than Christine. Ali sent 2 times as many messages as Juan. How many messages did they each send?

answer:

a=9

step-by-step explanation: lmk if you need a explanation

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: