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Function Operations
Given the function `f(x)=2 x - 5` and the function `g(x) = 8x^2+5x + 6` determine each of the following.

Give your answer as a whole number or a simplified fraction.
Evaluate `f(3) + g(8)`      `f(3) + g(8) = `
 
Evaluate `g(9) - f(7)`      `g(9) - f(7) = `
 
Evaluate `f(2) * g(11)`  `f(2) * g(11) = `
 
Evaluate `g(4)/f(8)``g(4) / f(8) = `
 

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