Solve the problem.The number of reports of a certain virus has increased exponentially since 1960. The current number of cases can be approximated using the function 
where t is the number of years since 1960. Estimate the of cases in the year 2000.
A. 386 cases
B. 1029 cases
C. 515 cases
D. 504 cases
Answer: C
Mathematics
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Evaluate the limit.
= (2e-t i + 8e-t j)
A. 
i - 4j
B. - 4j
C. i + 4j
D. 4j
Mathematics
Find the requested term in the sequence.Given that the sequence 2, 9, x, y, 31, . . . is a Fibonacci sequence, find x and y.
A. 11, 20 B. 13, 22 C. 20, 29 D. 11, 13
Mathematics
Write the equation as an equivalent logarithmic equation.zx - 3 = w
A. logw(z) = x - 3 B. logz(w) = x - 3 C. logz(x - 3) = w D. logw(x - 3) = z
Mathematics
Solve the problem.Two trains leave a train station at the same time. One travels east at 10 miles per hour. The other train travels west at 8 miles per hour. In how many hours will the two trains be 153 miles apart?
A. 8.5 hr B. 4.3 hr C. 9 hr D. 17 hr
Mathematics