Please HELP!!! MEDAL!!!!

2. A pool company forgets to bring their logarithmic charts, but they need to raise the amount of hydronium ions in a pool by 0.50. Using complete sentences, explain how your graph can be used to solve 10^–y = 0.50. Find the approximate solution.

Question

Please HELP!!! MEDAL!!!!

2. A pool company forgets to bring their logarithmic charts, but they need to raise the amount of hydronium ions in a pool by 0.50. Using complete sentences, explain how your graph can be used to solve 10^–y = 0.50. Find the approximate solution.

trisarahtops · Answer

here the graph I made for this assignment

trisarahtops · Answer

I think i know how to solve it's just i don't get how the graph helps

anonymous · Answer

here maybe this will help

trisarahtops · Answer

ummm i don't think that has to do with my question sorry

trisarahtops · Answer

thanks anyway :)

trisarahtops · Answer

@phi @dumbcow  @mathstudent55  @cwrw238 @jdoe0001  @robtobey

phi · Answer

what equation did you plot ?

trisarahtops · Answer

p(t) = –log10 t

trisarahtops · Answer

like I know how to solve that but how can the graoh help?

phi · Answer

If we use x and y for the variables  
you plotted
$$ y= - \log_{10} x $$ 
the inverse is

$$ -y = \log_{10} x \ 10^{-y} = x 
$$

if you want to solve
$$  10^{-y} = C $$
we read the graph by finding C on the x axis, go up to the curve, and then to the left to find the y value
For example, 
$$  10^{-y} = 1 $$
we go to x=1 and find y=0

For your problem
$$  10^{-y} = 0.5 $$
we go to x=0.5, go up to the curve, and then to the left to the y axis. It look like y is about ⅓  (tough to read, unless you make a "blow up" of he graph)

trisarahtops · Answer

so you want me to blow to the graph so you can see?