Convert the angle 0=17 pie/18 radians to degrees

Isee the amount was $90.00 then reduced to $75.00 , what is the percent ?

Need ! give step by step solutions on how to solve number one \frac{9-2\sqrt{3} }{12+\sqrt{3} } number two x+4=\sqrt{13x-20} number three (domain and range) f(x)=2\sqrt[3]{x} +1

36 inches/second = yards/minute how many yards?