Average rate of change is defined by (y^-y)/(t^-t) where the ^ means the final(so final y and final t)
So you'd do (8.75-2.75)/(12-4) which is 6/8 which is 3/4 of a dollar per week
Answer:
Step-by-step explanation:
The different isotopes have different "half-lives" – the time it takes to lose half of its radioactivity. Pu-239 has a half-life of 24,100 years and Pu-241's half-life is 14.4 years. Substances with shorter half-lives decay more quickly than those with longer half-lives, so they emit more energetic radioactivity.
6 weeks × 20 dollars = $120
Answer:
A
Step-by-step explanation:
To convert mixed number as improper fractions, use this rule:

<u>For Juan:</u> (
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<u>For Antonio:</u> (
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Answer choice A is correct.
Let the supplement be s.
180=s+115 => s=180-115= 65 degrees