Help...giving 20 points (number 3 nothing else)

Answer:
see below
Step-by-step explanation:
[tex](\frac{7}{2} )^{4} =\frac{7^4}{2^4}=\frac{2401}{16}[/tex]
[tex](7*2^3)^3=7^3*2^{3*3}=343*2^9=343*512=175616[/tex]
[tex](7^2)(7^2)=7^{2+2}=7^{4}=2401[/tex]
[tex](7^2)(7)^0=7^{2+0}=7^2=49[/tex]
[tex](\frac{7}{2}) ^{-4}=\frac{7^{-4}}{2^{-4}}=\frac{2^{4}}{7^4} =\frac{16}{2401}[/tex]
[tex]\frac{7^6}{7^3} =7^{6-3}=7^{3}=343[/tex]
i don't know if you need all the numbers if you don't copy till when it has the exponents