I think the answer is A is this correct? thank you!

x^2 = a/b (option a)

Step-by-step explanation:

If we have square root at the top and bottom then we take single square root with fraction inside

To remove square root we take square on both sides because square and square root will get cancelled

x^2 = a/b is true

c

step-by-step explanation:

it would be see because your formula is f(x)=6x, so 6 times 1 is 6 and you go on and the best answer is c.