the grade 8 has hired a disk jockey the disk jockey takes 85$ plus 2 for each student that attends. The disk jockey was paid 197
1 answer:
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Answer:
x ∈ (-∞ , -2) ∪ (1, 3)
Step-by-step explanation:
The expression is already factored. Note that for the polynomial that appears in the numerator there are 2 roots:
For the polynomial that appears in the denominator there is 1 root:
Note that does not belong to the domain of f(x) because it zeroes the denominator of the function and the division between zero is not defined.
With these three roots we do the study of signs to find out when
Observe the attached image
Note that:
when
when
when
Finally, we have the solution:
x ∈ (-∞ , -2) ∪ (1, 3)
Answer:
LAST OPTION:
Step-by-step explanation:
For this exercise it is important to remember the Power of a power property, which states that:
The expression given in the exercise is:
Therefore, in order to simplify it, you must apply the Power of a power property explained before.
Then, you get the following expression:
As you can notice, the expression obtained matches with the expression provided in the last option.