3.4 yards of cloth are needed to make a woman's dress. 2 yards of cloth are needed to make a girl's dress. How much more cloth is needed to make a woman's dress than a girl's dress?

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]