Question

find the rate of decay

Answer 1

b(x)=4(0.006)^x

Answer 2

answer needs to be a percent

Answer 3

@jim_thompson5910

Answer 4

I'd expect you would need a value for b(x) to find the value of x...

otherwise its simply a process of making x the subject.

divide both sides by 4

\[\frac{b(x)}{4} = 0.006^x\]

take the log of both sides

\[\log(\frac{b(x)}{4}) = x \log(0.006)\]

then

\[x = \frac{\log(\frac{b(x)}{4})}{\log(0.006)}\]

Answer 5

as a percent?

Answer 6

ok... then multiply the value by 100 to change a fraction to a percentage

\[x = \frac{\log(\frac{(b(x)}{4})}{\log(0.006)} \times 100\]

Answer 7

which would be???? (:

Answer 8

try it out urself first @Katieann16
its against CoC to give out answers without letting the user work it our also :)

Answer 9

as I said originally... you are missing a value for

b(x) ... if you knew it... then you could substitute and get a percentage..