Solve for x. Round to the nearest tenth, if necessary

The graph of f(x), shown below, resembles the graph of g(x) = x2, but it has been changed somewhat. which of the following could be the equation of f(x)?

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

How do you write a paragraph proof to prove that the corresponding angles shown are congruent