Answer:
Amplitude = 1 foot; period = 12 hours; midline: y = 5
Step-by-step explanation:
The Chesapeake Bay tides vary between 4 feet and 6 feet.
This means the range is
[tex]4 \leqslant f(t) \leqslant 6[/tex]
The period is the length of the interval on which the function completes one full cycle.The tide is at its lowest point when time (t) is 0 and completes a full cycle in 12 hours.
The interval is [0,12] and its length is 12, hence the period is 12.
The midline
[tex]y = \frac{min + max}{2} [/tex]
[tex]y = \frac{4 + 6}{2} = 5[/tex]
The amplitude is the distance from the midline to the peak.
The amplitude is |5-4|=|5-6|=1
The first choice is correct.
