A number k is greater than 3. Which  of thefollowing is true about k over 3 ?​

Construct the graph that models the given situation

Factor the polynomial. b^2 + 4b + 4

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]