Answer is (a+b)^6. you multiply the exponent
To tell if it is not a function you do a vertical line test. A vertical line test is when you draw a vertical line to test if the ordered pairs are a function or not.If the vertical line intersects the plotted points once it is a function and if the vertical line intersects the plotted points more than once it is not a function. An example of ordered pairs that are not a function is (2,6) and (2,8).
I would go with D but I am not saying it is correct.
Answer:
A will be 5 and B will be 25