$$\frac{1}{7^{12}}$$  

$$\frac{1}{7^4}$$  

$$7^{12}$$  

$$7^4$$  

$$\frac{1}{2^9}$$  

$$2^{20}$$  

$$\frac{1}{2^{20}}$$  

$$2^9$$  

$$\frac{30a^{24}}{b\ ^{30}}$$  

$$\frac{15625a^{24}}{b\ ^{30}}$$  

$$15625a^{24}b^{30}$$  

$$30a^{24}b^{30}$$  

1296 needs to be denominator

The exponent for x should be multiply by -4.

The y should be moved to the denominator.

The z should have an exponent of -20

6 to the power of 4 is not 1296

$$a^{24}$$  

$$a^{18}$$  

$$\frac{1}{a^{22}}$$  

$$\frac{1}{a^{16}}$$  

5 to the power of 3 is not 125.

C should be in the denominator

b should be in the denominator

The exponent for b should be 12