Harriet rolls a number cube what is the probability that the number cube will land on three or four

Which of the fallowing best completes the sequence 5,10,15, a) 30 b) 22 c)25 d)35

Apath 3 m wide runs around the inside of a square park inside 60 m.find the area of the path.pls

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