Algebra 1 Questions Help PLEASE!

The ~ are to try to align correctly please ignore them

1.) 13 is what % of 57?

2.) What is the simplified form of the expression:

2x^3+8x

_______

4x^3-16x

3.) What is the simplified form of the expression

x^2-1 ~~~~ x-1

_____ ÷ _____

x^2+6x ~~~ 7x^2

4.) 25 is 8% of what?

5.) 128 is what % of 80?

____________________________________

Perform operations and simplify completely

6.) 14x^5 ~~9x^3

_____ . _____

3x^2 ~~ 28x^8

7.) 3x^2+6x

_______

9x

8.)x~~2x

_ + __

6 ~~ 6

9.) (3x^2+9x-6) ÷ 3x

10.) 3x ~~x

__ - _

4~~~3

11.) x+3

________ . 5x+10

x^2+5x+6

12.) x^2-5x+4~~~x^2-3x-4

_______ ÷ _______

x^2+3x~~~~2x^2+6x

13.) 1~~~~3

_____ + ___

5x+10~~~~x+2

14.) x+2 ~~~ 6

________ - ____

x^2+4x+3~~~x+3

____________________________________

Solve each equation

15.)

5~~~ x

___ =~~_

x+2~~~ 3

16.)

x~~5 ~~~ 1

_ - _ = ~~~ _

4~~x ~~~ 4

____

Please help me answer these. I would really appreciate it