Answer:you know that N=0.41No so if you sub that in the No's cancel and you get 0.41=e^-kt.
solving for t you get t=(ln0.41)/(-k)=8915.98=8916 (to the nearest year)
Answer:
Undefined
Step-by-step explanation:
The formula for slope is 
So use the x's and y's from the given points to solve for the slope
(10, -6) (10, -6)


The slope for this line would be undefined because a number cannot be divided by 0
Answer:
33% or .33
Step-by-step explanation:
Divide 1/3 = .3333 (repeating). I would round to the nearest hundreths place:
1/3 = .33
For the precentage, multiple 0.33 by 100:
100 * 0.33 = 33%