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DochEvi [55]
3 years ago
5

HELP SOS IMMEDIATELY THANK YOUUUUU!!!!

Mathematics
1 answer:
e-lub [12.9K]3 years ago
4 0

Answer:  b) 18.37

<u>Step-by-step explanation:</u>

Since the intial t-value is 1960 and the final t-value is 1990, then t = 30

P(30)=\dfrac{100}{1+400\cdot e^{-0.15(30)}}\\\\\\.\quad =\dfrac{100}{1+400\cdot e^{-4.5}}\\\\\\.\quad =\dfrac{100}{1+400(0.0111)}}\\\\\\.\quad =\dfrac{100}{1+4.4436}}\\\\\\.\quad =\dfrac{100}{5.4436}}\\\\\\.\quad =\boxed{18.37}

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