Question: Please show work. Thanks 20. A function is given by f(x) x + x. Find each of the following. [R.21 c) f(a) b) f(-5)

Please show work. Thanks

20. A function is given by f(x) x + x. Find each

20. A function is given by f(x) x + x. Find each of the following. [R.21 c) f(a) b) f(-5)

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