Doctors can use radioactive chemicals to treat some forms of cancer. The half life of a certain chemical is 7 days. A patient re
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<u>Answer:</u>
<u>Step-by-step explanation:</u>
To find the solution to the equation, we have to rearrange the equation to make the subject:
⇒ [Subtracting 2 from both sides]
⇒
⇒ [Subtracting
from each side]
⇒
⇒ [Diving both sides by 213]
⇒