How do i simplify 7 to the power of 1

Any number to the power of is itself. So, .

Here are some more examples:

the answer is (4,3)

since the rule for r0, 90º is (-y,x) and it was already applied to form the image, all you have to do is reverse the answer using this formula.

the square root of what number? if you add that, then someone will probably answer the question.