Simplify

$$\left(-7x^{-7}\right)^2$$

(a)  

Simplify

$$\frac{-4p^{-4}q^3}{-3p^{-3}q^{-4}}$$

(a)  

Simplify

$$\left(\frac{2x}{3x^2y^{-1}}\right)^{-2}$$

(a)  

Simplify

$$\frac{3mn^2}{-27m^{-1}n}$$

(a)  

Simplify

$$\left(-2x^{-3}\right)^2-\left(-3x^{-2}\right)^3$$

(a)  

Simplify

$$\frac{1+xy}{x^{-1}+y}$$

(a)  

Solve for n

$$3^{3n+1}=81$$

(a)  

Solve for n

$$5.3^{1-n}=45$$

(a)  

Solve for x

$$3^{x-2}=\frac{1}{9}$$

(a)  

Solve for x

$$6^{2x}=\frac{1}{36}$$

(a)  

Solve for x

$$\frac{1}{3}\left(\frac{1}{3}\right)^x=27$$

(a)