A boy hikes 41km and for the first part of the hike he walks at 4km/h. For the rest of the hike he walks at 5km/h. if it takes him 9 hours to complete the hike calculate how far he walked at each speed.

Can someone plz me understand how to do these. plz, show work.in exercises 1-4, rewrite the expression in rational exponent form.[tex]\sqrt[4]{625} \sqrt[3]{512} (\sqrt[5]{4} )³ (\sqrt[4]{15} )^{7}\\ (\sqrt[3]{27} )^{2}[/tex]