Half-Life = ln (.5) / k
Half-Life = .693147 / .00011
Half-Life =
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<span>
<span>
6,301 years
For a radioactive substance to decay to 25%, it has to go through 2 halflives.
2 * 6,301 = 12,602 years
approximately 12,600 years
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D would be the answer ^^ Hope this helps!! :) Good luck
The best pricing decision that is made is to sell each unit for $3.
<h3>How to calculate the price?</h3>
From the information given, the revenue will be:
= Customer × Charge
= 16 × 10
= 160
Based on the information given, the equation will be:
(10 + x)(16 - 2x) ≥ 130
160 - 20x + 16x - 2x² ≥ 130
-2x² - 4x + 30 ≥ 0
x² + 2x -15 ≤ 0
(x+1)² ≤ 4²
x+1 ≤ 4
x ≤ 3
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The answer is A) 2/3 ^ 4 power
