Could someone help me on this math question !

Which expression gives the exact value of x?

Ahighway between points a and b has been closed for repairs. an alternative route between there two locations is to travel between a and c and then from c to b what is the value of y and what is the total distance from a to c to b?

Suppose that g(x)=f(x+9) which statement best compares the graph of g(x) with the graph of f(x)