To find: the time when water’s depth is 63 feet.
At 01:00A.M and at 13:24 P.M.
Given information:
The water depth d for the Bay can be modeled by
Where d is measured in feet and t is the time in hours.
Also, it is known that
Explanation:
Substitute
Now, it is known that
Now, it is known that t represents time during day in hours, where
Now, when
That is, the water’s depth will be 63 feet 1 hour after midnight. That is at 01:00A.M.
Now, when
That is, the water’s depth will again be 63 feet 13.4 hours after midnight. That is at 13:24 P.M.
Now for any other value of n , the value of t will be out of the bound
So, the water’s depth will be 63 feet at 01:00A.M and at 13:24 P.M.
Chapter 10 Solutions
Holt Mcdougal Larson Algebra 2: Student Edition 2012
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