Chapter 8 – Exponentials and Logarithms

Apr 6th, 2011 by corricelli

Hello Team 8:

Please use this section to post questions and/or start conversations related to Chapter 8 material.

Happy blogging,
Mrs. Corricelli

3 Responses to “Chapter 8 – Exponentials and Logarithms”

Lilah Tracy says:

April 6, 2011 at 7:28 pm

Hi! ok so i ask about number 16 on the hw quiz but we ran of time in class today and i am still having trouble with it. the question in case you dont have it was… 100 grams of radium is stored in a container. the amount R ( in grams) of radium present after t years can be modeled by R = 100e^-0.00043t. Graph the model. How much of the radium is present after 10,000 years? I was able to work through it and i got the right answer for the 10,000 years but i am still unsure on how you get the ordered pairs for the graph, or how to go about graphing. i try to make a table like i have been doing but get lost. the back of the book shows the graph so i know what it looks like but dont really understand. I know its hard to explain a graph but anything to get me started would help! thanks!

Reply
Turco says:

April 11, 2011 at 8:27 pm

Hello, so I understand finding the inverse now but i do not get how to graph it at all. I loked in the back of the book but i dont get how to plug in the number so i can find the point. does anyone want to help explain 65 for example? i got 5^y=x i think but how do u graph that??

Reply
SAM Turco says:

April 11, 2011 at 8:35 pm

Hello, so I understand finding the inverse now but i do not get how to graph it at all. I loked in the back of the book but i dont get how to plug in the number so i can find the point. does anyone want to help explain 65 for example? i got 5^y=x i think but how do u graph that??

Reply