NO LINKS AND NO WEBSITES I really need help with this, and also if it's Substitution or linear combination.

Hurry which expression is equivalent to 3√x^5y?

For a function f(x), a) if f(7) = 22 then f^-1(22) = b) f^-1(f(c)) =

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]