Fourteen and one eighth minus twelve and five ninths

1 and twenty thirty sixths

Step-by-step explanation:

14 1/8 - 12 5/9

1/8x4/4=4/36

1/8= 4/36

5/9x4/4= 20/36

14-12= 2

2-20/36= 1 20/36

9 sandwiches per hour

step-by-step explanation:

when we have a rate, we want a 1 in the denominator

27/3 = 9

27 sandwiches/ 3 hours = 9 sandwiches/hour

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: