Let's solve the exponential equation 4ex = 80. (a) First, we isolate ex to ge

Algebra
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Let's solve the exponential equation 

4ex = 80.
 
(a) First, we isolate ex to get the equivalent equation
20
 
.
 

(b) Next, we take ln of each side to get the equivalent equation
ln(20)
 
.
 
Jul 16th, 2015

a. e^x = 80/4 = 20

b. x = ln 20 = 1.3863.....................................................................................................................................................................

Please let me know if you need any clarification. I'm always happy to answer your questions.
Jul 16th, 2015

PFB the updated answer

a. e^x = 80/4 = 20

b. x = ln 20 = 2.9957....................................................................................................................................................................


Jul 16th, 2015

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