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2 answers:
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Answer:
31.0 grams.
Step-by-step explanation:
According to the given information
Half-life of a substance = 37 years
Initial amount = 202 gram
The exponential function for half-life of a substance is
where, A₀ is initial amount, t is time and h is half life.
Substitute A₀=202 and h=37 in the above function.
We need to find the amount of the substance remaining after 100 years.
Substitute t=100 in the above function.
Round the answer to the nearest tenth.
Therefore, the amount of the substance remaining after 100 years is 31.0 grams.
Answer: The wholesale cost of the bike = $100
Step-by-step explanation:
Let x = wholesale cost of the bike
As per given,
Selling price = cost price + (Mark up percent) x ( cost price) (i)
Selling price of bike = $160
Mark up percent = 60% =0.60
Substitute values in (i) , we get
Hence, the wholesale cost of the bike = $100