The expression that should be equivalent to the given expression is [tex]49^{-5}[/tex].
Calculation of the expression:
Since the given expression is [tex](7^-8) (7^3)[/tex]
We need to solve the above expression
So
[tex]= 7*7^{-8 + 3}\\\\= 49^-5[/tex]
Hence, The expression that should be equivalent to the given expression is [tex]49^{-5}[/tex].
Therefore, the first option is correct.
Learn more about an expression here: https://brainly.com/question/15983515
