Answer:
Step-by-step explanation:
Since emails arrive at a constant rate of 22 per day, the equation for n-th term can be modeled by a linear relationship of general form:
In this case, E₀ is the initial number of emails unread, 8, k is the rate at which emails arrive, 22 per day, and t is the number of days passed.
At t=n, the number of unread emails is:
Answer: 17-19 trillion steps.
0.23
1. A
2. C
3. D
4. B
The z-score for 36,000 is (36,000 - 40,000) / (15,000 / √25) = -1.333
The z-score for 42,000 is (42,000 - 40,000) / (15,000 / √25) = 0.6667
P(36,000 < x < 42,000) = P(-1.3333 < z < 0.6667)
P(z < 0.6667) - P(z < -1.3333)
0.7475 - 0.0913
0.6562