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Given the linear function f(x) = x and g(x) = 2x + 5. Find f(x) + g(x) for f(3) and 9(-2).

User Bob Kerns
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Final answer:

To find f(x) + g(x) for f(3) and g(-2), we calculate both functions at the given points and add the results. f(3) is 3 and g(-2) is 1, so the sum f(3) + g(-2) is 4.

Step-by-step explanation:

The student has asked to find the sum of the two functions f(x) = x and g(x) = 2x + 5 evaluated at specific points: f(3) and g(-2). To solve this, we evaluate each function at the given points and then add the results together. Firstly, evaluating the function f at x = 3 gives us f(3) = 3. Next, we need to evaluate the function g at x = -2, so g(-2) = 2(-2) + 5 = -4 + 5 = 1. The question likely meant to ask for g(-2) instead of 9(-2), which seems to be a typo. Finally, to find f(x) + g(x), we sum the results: f(3) + g(-2) = 3 + 1 = 4.

User Wenqiang
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