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1. Determine whether the equation defines a function with independent variable x. If it does, find the domain. If it does not, find a value of x to which there corresponds more than one value of y.
x|y| = x + 9
4. Use the following to answer questions a-d:

f(x) = x2 + x and g(x) = x – 5

a. Find h(x) = (f ◦ g)(x).
b. State the domain of h(x) = (f ◦ g)(x).
c. Find h(x) = (g ◦ f)(x).
d. State the domain of h(x) = (g ◦ f)(x).