April 18, 2014

Homework Help: Math Gr12 Advanced Functions

Posted by Billy Bob on Sunday, July 22, 2012 at 9:17am.

I am stuck on this one part of this question:
The function S(d)=93(logd)+65 relates the speed of the wind S, in miles per hours, near the centre of a tornado to the distance that the tornado travels,d,in miles. If a tornado has sustained winds of about 250 mph, estimate the distance it can travel.
I do this :
250= 93logd +65
185/93= logd
logd= 0.989247312
I dont know what to do after that because I cannot divide anything by log. Or is there some other way I should be doing this?

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