A bag contains 42 cups of dog food. Your dog eats 2 1/3 cups of dog food each day. How many days will the dog food last if you feed him the same
amount each day?*
3/8 , 9/16 , 1/4 , or 6/24

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]