Gabby earned $70 selling 10 bracelets. How many bracelets does she need to sell to earn $210?

2x - 20 = 32 20 - 3x = 8 6x - 8 = 16 -13 - 3x = -10

Given a: b and b: c, find a: b: c. write the ratio in simplest form. a: b=6: 10 and b: c=21: 33

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]