An athlete is tracking his weight
2 answers:
Answer:
He loses 7 pounds per week
Step-by-step explanation:
After 3 weeks he weighs 188 pounds.
After 6 weeks he weighs 167 pounds.
Weight loss = (188 - 167) pounds = 21 pounds
Time interval = 6 weeks - 3 weeks = 3 weeks
Rate of change = Weight loss ÷ time interval = pounds per week = 7 pounds loss per week.
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Answer:
- <u><em>g∘f (0) = 1</em></u>
Explanation:
The <em>composition</em> of the <em>functions</em> f and g represented by g ∘ f ( 0 ) means that g is applied to f(0), i.e f(0) is the input to the function g.
Since f(0) = 1, you are going fo find g(1):
Answer:
It will take 7 years ( approx )
Step-by-step explanation:
Given equation that shows the amount of the substance after t years,
Where,
= Initial amount of the substance,
If the half life of the substance is 19 years,
Then if t = 19, amount of the substance = ,
i.e.
Taking ln both sides,
Now, if the substance to decay to 78% of its original amount,
Then
Again taking ln both sides,
Hence, approximately the substance would be 78% of its initial value after 7 years.