37:28
1 answer:
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Answer:
The first term is 28.
Step-by-step explanation:
Given: 8th term of Geometric sequence ,
and 3rd term of Geometric Sequence,
We have to find First term of given geometric Sequence.
Let a be the first term of geometric sequence.
We know that,
So,
So, 3rd term = 112
a × (-2)² = 112
a = 112 / 4
a = 28
Therefore, The first term is 28.
It is given that the mountain climber's change in elevation over an 8-hour period is −248 feet. Therefore, to find the average change in elevation per hour for that time period all that we need to do is divide the total change in elevation by the the time taken.
Therefore, average change= feet
Therefore, the first option is the correct option.