Posted by Billy Bob on Sunday, July 22, 2012 at 9:17am.
You have to take the inverse of log, that is ...
what number d you you need, so that log d = .989...
BTW, I got log d = 1.9892....
hope yours was just a typo.
On most calculators, use the 2ndF key
on mine, I would press the following:
2ndF
log
1.98924..
=
to get 97.5545
Without having to reenter the 1.98...
Here is the sequence of my keystrokes
250

65
=
÷
93
=
2ndF
log
=
to get the 97.5545
Answer this Question
Related Questions
advanced functions HELP!!!  the function S(d)=93logd+65 relates the speed of ...
repost math question  An aircraft flew 6 hours with the wind. The return trip ...
algebra II  An aircraft flew 6 hours with the wind. The return trip took 7 ...
math  A pilot can travel 400 miles with the wind in the same amount of time as ...
math  The wave heights h in the open sea depend on the speed v of the wind and ...
math  A certain aircraft can fly 768 miles with the wind in 4 hours and travel ...
math  a plane traveled 3927 miles with the wind in 7 hours and 3437 miles ...
math  Matt and Anna are frequent fliers on Fast n Go Airplanes. They often fly ...
11  How do I work this problem? Flying with the wind, an airplane can travel ...
MATH  Matt and Anna are frequent fliers on Fast n Go Airplanes. They often fly ...