PLEASE HELP I WILL GIVE BRAINALIST TO THE FIRST PERSON!!!!!!

Answer:
1.) 1 2.) [tex]\frac{1}{4^{2} }[/tex] 3.)[tex]\frac{7b^{3}}{a^{5}}[/tex] 4.)[tex]\frac{9a^{7}}{b^{6}}[/tex] 5.)[tex]\frac{1}{5^{2}}[/tex] 6.) [tex]\frac{8x^{3}}{27}[/tex]
Step-by-step explanation: