Function Notation

$$f\left(x\right)=3x+6$$

Calculate $$f\left(-4\right)$$

$$f\left(x\right)=10-2x$$

Calculate $$f\left(3\right)$$

$$f\left(x\right)=x^2-7$$

Calculate $$f\left(6\right)$$

$$f\left(x\right)=x^2+3x$$

Calculate $$f\left(-4\right)$$

$$f\left(x\right)=8x-2x^2$$

Calculate $$f\left(3\right)$$

$$f\left(x\right)=6x+4$$

$$f\left(a\right)=34$$ calculate $$a$$

$$f\left(x\right)=23-x^2$$

$$f\left(a\right)=14$$ calculate $$a$$

$$f\left(x\right)=2x^2+5$$

$$f\left(a\right)=37$$ calculate $$a$$

$$f\left(x\right)=54-3x$$

$$f\left(a\right)=24$$ calculate $$a$$

$$f\left(x\right)=7x+15$$

$$f\left(a\right)=1$$ calculate $$a$$