HURRY PLEASE A line has a slope of -3 and passes through the point (-3, 8) What is the equation of the line?

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

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

Find the rate of change for the situation. you run 7 miles in one hour and 21 miles in three hours.