Algebra Examples

$f (12) = 70 e^{- 0.4 (12)} + 30$

Step 1

Multiply $- 0.4$ by $12$ .

$f (12) = 70 e^{- 4.8} + 30$

Step 2

Rewrite the expression using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$f (12) = 70 (\frac{1}{e^{4.8}}) + 30$

Step 3

Combine $70$ and $\frac{1}{e^{4.8}}$ .

$f (12) = \frac{70}{e^{4.8}} + 30$