Find the missing exponenta)25b)5c)20

When two exponents that have the same base are divided, it's the same as subtracting their exponents. For example, you can rewrite the equation like this:

Then, you can rewrite the x^10 as x^(15-5):

Therefore, the ? must be equal to 5 (b).

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: