I need help on this question as soon as possible. If anybody can give me the correct answer I’ll give . I just need help. This is my 2nd question and there is 11 questions

Show algebraically that f and g are inverse functions f(x)=x^2/-6; g(x)=square root of 2x+12

()1. how do you find range? 2.the following set of data is to be organized into a histogram. if there are to be five intervals on the graph, what should the length of each interval be? 30, 34, 23, 21, 27, 25, 29, 29, 25, 23, 32, 31

What is the value of x in the diagram below?