Precalculus Examples

$f (16) = 70 e^{- 0.2 (16)} + 30$

Step 1

Multiply $- 0.2$ by $16$ .

$f (16) = 70 e^{- 3.2} + 30$

Step 2

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

$f (16) = 70 (\frac{1}{e^{3.2}}) + 30$

Step 3

Combine $70$ and $\frac{1}{e^{3.2}}$ .

$f (16) = \frac{70}{e^{3.2}} + 30$