Answer:
B. 23.
Step-by-step explanation:
In the expression
[tex]7^{log_7 23 }[/tex]
the logarithm [tex]log_7(23)[/tex] in the exponent is asking us the following question:
"to what power should I raise 7 to as to get 23?"
Let us call that number [tex]x[/tex], then we have
[tex]log_7(23)=x[/tex], which means
[tex]7^x=23[/tex]
or
[tex]\boxed{7^{log_7(23)}=23}[/tex]
which is Choice B.
