20 estimate. use the benchmark percents 1% and 10% 80% of 24 61% of 108

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

Which rational number could be graphed between -4 and -5

The square root of 9x plus 7 plus the square rot of 2x equall to 7