Question

log4 128 equals 7/2 in exponential form

Answer 1

$\bf \textit{exponential form of a logarithm} \\\\ log_a b=y \implies a^y= b\qquad\qquad % exponential notation 2nd form a^y= b\implies log_a b=y \\\\ -------------------------------\\\\ log_4(128)=\cfrac{7}{2}\qquad \implies \qquad 4^{\frac{7}{2}}=128$