Answer:
[tex]7^{15}[/tex]
Step-by-step explanation:
Using the rule of exponents
[tex](a^m)^{n}[/tex] = [tex]a^{mn}[/tex] , then
[tex](7^5)^{3}[/tex] = [tex]7^{5(3)}[/tex] = [tex]7^{15}[/tex]
