Question

What is the discontinuity of the function f(x) = the quantity of x squared minus 3 x minus 28, all over x plus 4?

Answer 1

Answer:

(−4, −11)

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Answer 2

You get discontinuity when in this function you divide by 0. You will divide by 0 if x+4 = 0. That means that x = -4

y value for this example doesn't matter because for x = -4 you will have discontinuity. Since the only answer that has -4 as x value is D, that has to be solution.

Answer is D