Question

use the aleks calculator to evaluate each expression. round your answers to the nearest thousandth. do not round any intermediate computations.

$$ e ^ { - 0.2 } = $$

$$ 215 e ^ { 0.55 } = $$

Explanation:

Step1: Calculate $e^{-0.2}$

Using the formula $a^{-n}=\frac{1}{a^{n}}$, so $e^{-0.2}=\frac{1}{e^{0.2}}$. Then use the calculator to get $e^{-0.2}\approx0.819$.

Step2: Calculate $215e^{0.55}$

First calculate $e^{0.55}$ using the calculator, and then multiply the result by 215. $e^{0.55}\approx1.731$, then $215\times1.731 = 372.301$.

Answer:

$e^{-0.2} = 0.819$; $215e^{0.55}=372.301$