Answer:B i just got it right on usatestprep
Step-by-step explanation:
i guessed and got it right
Here you go. I hope this will help
<span> half life i= 78 hours
amount after 78 hours is 395 kg:
395 = 790e^(k*78)
Dividing by 790 and taking natural log
ln (395/790) = (k*78)
-0.6931 = 78k
-0.00888 = k
lets calculate how much is left after 18 hours:
Amount(18)
= 790e^(-0.00888*18)
Amount = 673.301 kg
hope this helps</span>
1.77777777778 would be the answer you are looking for I think.
<h3><u><em>My friends the answer is:
</em></u></h3><h3><u><em>
x-intercept(s): (
3
,
0
)
</em></u></h3><h3><u><em>y-intercept(s): (
0
,
6
) </em></u></h3>
