6th grade math homework help please help a 6th grader?

[alex l]

Write each expression only usin positive exponents
a. 2.x^-1
b. (2x)^-1
c. 1
_______
4^-5
d. x^-2
_________
y^-5

Use the properties of exponents to rewrite each expression.

a. 7.6x^7
_________
3.8x^3

b. x^2* (-2)^0

c.1
_________
4^-5

d. 3^4*2^2*3^2*2^3

Tell whether each expression is true or false. If it is false, change the right side to make the equation true.

a. (3x^2)^3=9x^6
b. 3(2x^2)^-1=-6x^-2
Im advanced in math and im not trying to cheat on my homework I just want to cheak my work.