-Using the information from question 7, what is the total cost of the car including sales tax?

answer:

c. the third graph

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:

total of apples - take away four

6-4 = 2

answer is 2 apples