Solve the problem.Suppose that the number of inhabitants of Country A is given by  million, and the number of inhabitants of Country B is given by , where x is the number of years since 2010. Find the year in which the number of inhabitants of Country A equals the number of inhabitants of Country B.

A. 2024
B. 2022
C. 2026
D. 2020


Answer: D

Mathematics

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Solve the problem.The position of a particle moving along a coordinate line is s =  with s in meters and t in seconds. Find the particle's acceleration at 

A. -  m/sec2
B. -  m/sec2
C.  m/sec2
D.  m/sec2

Mathematics

Solve the problem.Find the charge Q as a function of time in an RCL circuit if R = 104 ?, L = 0, , and  Assume that  and  at  (when the switch is closed).

A. Q = 5 × 10-4(1 - e-0.25t) B. Q = 2 × 10-3(1 - e-0.25t) C. Q = 4 × 10-4(1 - e-t) D. Q = 2 × 10-3(1 - e-t)

Mathematics

The profit earned when n items are produced is given by the function . If increasing production will result in an increase in profits, what can be said about marginal profit ? ?

A.  is positive.
B.  is negative.
C.  is zero.
D.  is linear.

Mathematics

Simplify the rational expression. If the rational expression cannot be simplified, so state.

A.
B.
C.
D. cannot be simplified

Mathematics