Simplify the expression -2.4f+0.9f-11-9

Is there an x intercept in the equation 60*1.15^x

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]

Which ordered pair is a solution of the equation? 2x+3y=10