Someone give me the answer

We want to begin with nine, which gives us as follows:

9

Then, we want to subtract:

9 -

And we are subtracting x:

9 - x

The expression is 9 - x for the steps in the image given.

Hope this helps!! :)

2

step-by-step explanation:

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)