$\text{a)}{\left(7a\right)}^2=49a^2$  

$\text{b)}{\left(3b\right)}^4=81b^4$  

$\text{c)}{\left(0,1c\right)}^3=0,001c^3$ $\text{c)}{\left(0,1c\right)}^3=0,001c^3$  

$\text{d)}{\left(\frac{1}{7}d\right)}^2=\frac{1}{49}{d}^2$   

$\text{e)}{\left(\frac{e}{2}\right)}^5=\frac{e^5}{32}$  

$\text{f)}{\left(\frac{5}{f}\right)}^3=\frac{125}{f^3}$  

$\text{g)}{\left(8:g\right)}^2=64:g^2=\frac{64}{g^2}$   

$\text{h)}{\left(h:3\right)}^3=h^3:27=\frac{h^3}{27}$