Can you check my question ? for your .

The correct option will be the last one:

Explanation

The general equation for sinusoidal function is: , where Amplitude, frequency and y-intercept

Here the maximum value is 15 and the minimum value is -3. So, the distance between maximum and minimum values is 18. That means, the Amplitude,

Frequency is given as 3 and y-intercept is 6

So, the required function will be:

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