What is $\left(f-g\right)\left(x\right)$ if  $f\left(x\right)=5x-3$  and  $g\left(x\right)=15x+6$  ?

If $g\left(x\right)=5x^2-3x+1$ and  $h\left(x\right)=5-5x-7x^2$ , what is  $\left(h-g\right)\left(x\right)$  

What is  $f\left(\sqrt{2}\right)+g\left(\sqrt{3}\right)$ if  $f\left(x\right)=5x^2-x+5$  and  $g\left(x\right)=3x^2+2x-1$ ?

Vincent's father will celebrate his birthday next month. Vincent saved  $f(x)=(2x^2+10x+3)$  pesos from his allowance to buy a gift that costs  $g(x)=(3x+7)$   pesos. How much did he still have after buying

The HR Department informed Benelyn that her starting salary as car sales agent will be $f(x)=(10x^2−5x+12)$ pesos. She will receive  $g(x)=(2x^2+3x−5)$ pesos as incentive if she is able to meet the quota after six months. What will be her new salary after six months, assuming that she meets the quota?

Elvince weighs  $f(x)=(5x^2+5x+3)$  pounds. What will be his weight after he loses  $g(x)=(2x^2−2x+1)$  
 pounds?