Is the product of 8 positive numbers
And 3 negative numbers positive or
Negative?

Negative

Step-by-step explanation:

The 8 positive numbers give you a positive, and a positive times negative is negative, then negative times negative is positive, and positive times negative is negative. Your final number would be negative.

1/3 + 1/3 ≠ 2/6 because 1/3 alone = 2/6  

step by step explanation:

1/3 + 1/3 = 2/3       2/3=4/6

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: