Answer:

Step-by-step explanation:
The function that could model this periodic phenomenon will be of the form

The tide varies between 3ft and 9ft, which means its amplitude
is

and its midline
is
.
Furthermore, since at
the tide is at its lowest ( 3 feet ), we know that the trigonometric function we must use is
.
The period of the full cycle is 14 hours, which means


giving us

With all of the values of the variables in place, the function modeling the situation now becomes

The answer to the missing value is X = 3
The point (2,0) represents a relative minimum and an x-intercept.
<h3>How to determine the property?</h3>
The missing graphed function is added as an attachment
The point (2,0) means that:
x = 2 and y = 0
On the attached graph, we can see that the graph touches the x-axis at (2,0); this represents the x-intercept
Also, the graph has a minimum at (2,0); this represents the relative minimum
Hence, the point (2,0) represents a relative minimum and an x-intercept.
Read more about graphed functions at:
brainly.com/question/4025726
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Answer:
Answer is B. X=6, Positive and negitive terms cancel out
Step-by-step explanation:
1.64 / 0.2 = 8.2 I checked it to make sure by multipying: 8.2 * 0.2 = 1.64