Mark is 11 years older than his sister. in 8 years he will be twice as old as she will be then. how old are they now

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

Can someone factor this fully? my friend and i have two different answers and i would like to know if either of them is right. you in advance. a^2 - b^2 + 25 + 10a

Can someone me with this graph problem by the way i need to know the answers by today since this assignment is due ! !