Here's what I did and I checked it So it is correct!!
25% is your answer.
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I hope that helps you!! Any more questions please feel free to ask!!
The easiest way to work this is to note that the a Sine wave is zero when it starts at zero, but this one starts before x=zero. Its transformation is moved left, so its phase shift is positive.
And that is amplitude is 1/2 of its minimum to maximum value (40) which equals 20. this says that is shifted upwards by 25.
So B. is the answer.
Answer:
X Y and Z are the variables.
Step-by-step explanation