Question

please help me with the answer.

Answer 1

Well
${4}^{3.5}$
can be written as
${2}^{7}$
and hence
${2}^{7} \div {2}^{5} = {2}^{2} \div 1$
therefore the answer is it is equal to 4:1. Hope you were helped. Cheers mate. :)