Write the Word or Phrase That Best Completes Each Statement $f ( x ) = 8 ^ { x }$

Short Answer

Write the word or phrase that best completes each statement or answers the question.
-Given $f ( x ) = 8 ^ { x }$ , evaluate the following.
(a) $f \left( \log _ { 8 } 5 \right)$
(b) $\mathrm { f } \left[ \log _ { 8 } ( 8 \ln 8 ) \right]$
(c) $f \left[ \log _ { 8 } ( \ln 8 ) \right]$