Hey can someone please help me solve system of equations I’m failing can y’all help me pleaseee

The graph shown below expresses a radical function that can be written in the form f(x)=a(x+k)1/n+c what does the graph tell you about the value of n in this function

4. find the geometric mean of 4 and 12. 24 8

What is the solution of sqrt x+2-15=-3