Determine whether or not they are functions or not. please do all 6 if you can?

How long does it take natsumi to clean up after she is done? table: .area time30. 245. 2.7560. 3.5

What’s 8y+48 and factor each expression completely

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]