What would the altimeter read if Janelle were at sea level? What do the positive readings on the altimeter represent? What do the negative readings on the altimeter represent?

step-by-step explanation:

this is not a question

a = 3.14

b = 18

c = 18/5 or 3.6 or 3 3/5

step-by-step 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:

-4, -2, 1, 4

step-by-step explanation:

domain = x values

range = y values