The number of students in the period 7 study hall at jin's school is 4 times the number of students in jin's home room. how many students are in the study hall if there are 16 students in jin's home room.

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:

thus, the first answer choice, y = sec x, is the correct one