From the attached graphic, Half-life = ln (.5) / k
Half-life =.693147 / <span>0.1142
= </span><span><span><span>6.0695884413
</span>
days
The value of "k" should be negative and should have units associated with it.
</span>
</span>
Answer:54pounds
Step-by-step explanation:63-9=54
20b + 18s < = 150 (thats less then or equal)
4 and 5
4^2= 16
5^2= 25
Square root of 21= 4.5