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Function Operations
Given the function `f(x)=5 x - 3` and the function `g(x) = 3x^2+5x + 30` determine each of the following.

Give your answer as a whole number or a simplified fraction.
Evaluate `f(12) + g(5)`      `f(12) + g(5) = `
 
Evaluate `g(2) - f(4)`      `g(2) - f(4) = `
 
Evaluate `f(8) * g(10)`  `f(8) * g(10) = `
 
Evaluate `g(6)/f(9)``g(6) / f(9) = `
 

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