How many pounds of nuts selling for $ 12 per lb and raisins selling for $ 6 per lb should a person combine to obtain 120 lb of
1 answer:
You might be interested in
Answer:
should be correct!
Step-by-step explanation:
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)
