To find the value of X you would have to solve the equation.
Example: for question 2
Answer:
yes. ..........................
<span>A regular octagon is a closed figure with sides of the same length and internal angles of the same size. so if it is rotated 360 degrees it should coincide with its preimage after every 45 degrees. So 360/45= 8 times</span>
Recall that the derivative of a constant is 0.
Diagram not attached, please add the question.