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Answer:
15. f(x) +g(x) = 7x +2
16. f(x) -g(x) = -3x +8
17. h(x) · g(x) = 35x -21
Explanation:
Substitute the function definition for each function expression and simplify.
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15. f(x) + g(x) = (2x +5) +(5x -3)
f(x) +g(x) = 7x +2
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16. f(x) - g(x) = (2x +5) -(5x -3)
f(x) -g(x) = -3x +8
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17. h(x) · g(x) = (7) · (5x -3)
h(x) · g(x) = 35x -21