the sum of three numbers is 131. the third number is 4 times the first. the second number is 5 more than the first. what are the
1 answer:
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Answer: (D) 7
Step-by-step explanation:
has critical points where
:
where is any integer. We get solutions in the interval
for
, for which
.
At this critical point, we have .
At the endpoints of the given interval, we have and
.
So we have the extreme values