1. 4y/4 + 2x for y = 6, x = 2? 2. 8x /(x - 1) + 4 for x = 3?

3. 3(x - y) - 5 for x = 7, y = 4?

4. (x - 5)5 for x = 9?

5. 6y/5 for y = 30?

6. 10 + 2(3x - 2) for x = 4?

7. 12/y - 2 for y = 3?

8. 11 + x(12 - 2x) for x = 2?

9. xy + 2x -10 for x = 3, y = 2?

10. 3x(x - 5) for x = 10?

11. 75 - 7x + 5 for x = 2?

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.