I have these problems,need help with ans.:

1. -6(2x-9)-4x+5 (simplify)

2. x-6/y-5 (simply)

3. (x/6) to the 3rd. (simplify)

4. y-7x/6x+xy given x=1 & y=3 (evaluate)

5. 8x+7 given x=3 (evaluate)

6. -(8z-7w+2y) (simplify)

7. 6 sq. root sign over 7 + 3 sq. root sign over 7 (simplify)

8. 19/sq. root sign over 19 (simplify)

9. 5 to the 4th dot 5 to the 8th (simplify)

10. 7 0 power (simplify)

11. determine whether 15>16 (true or false)

12. sq. root sign 100/9 (simplify)

13. 2+6(x-2) to the 3rd. given x=4 (evaluate)

14. (x neg. 5th power)neg. 3rd (simplify)

15. express &evaluate the distance between the number 84 and neg. 34 using absolute value?