92
29
———
first times 9 by 2 then 9 by 9
then add a 0 for the second colum as a place holder then 2 times 2 and 9 times 2 add the two colums together
Since they are asking you who swam the fastest not the longest etc but the fastest. So the answer would be tawni. I believe this because they never said who swam more BUT JUST THE FASTEST PERIOD! Sorry, i went too far. Hope this helps! :)
The answer would be D.
Since you get a 5% discount you only have to pay 95% of the regular price hence the .95(....
On the left side you need to distribute that 2 into (x+3). On the right side distribute 3 into (2x+1). Combine like terms and set the entire equation equal to zero, then methodically find x. leave a comment if you need more help.
How long, to the nearest day, until it is safe to swim again will be 156 days
Let x represent number of day until it is safe to swim again
First step
=2000 *1/2^x
100=2000 *0.5^x
0.05=0.5^x
Second step
Log 0.05=xLog 0.5
Log 0.05/L0g 0.5=x
x=36 days* Log 0.05/L0g 0.5
x=36 days*43.22
x=156 days
Inconclusion How long, to the nearest day, until it is safe to swim again will be 156 days
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