Solve the problem.The first recorded population of a particular country was 30 million, and the population was recorded as 38 million 8 years later. The exponential growth function 
describes the population of this country t years since the first recording. Use the fact that 8 years later the population increased by 8 million to find k to three decimal places.
A. 0.880
B. 0.040
C. 0.030
D. 0.260
Answer: C
Mathematics
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Solve the system. x - y + 5z = 34x + z = 0 x + 5y + z = -15
A. {(0, -3, 0)} B. ? C. {(0, -3, 3)} D. {(0, 0, -3)}
Mathematics
Solve for the indicated variable.u = p - k ln t, for t
A. t = e(u - p)/k
B. t = ln 
C. t = e(p - u)/k
D. t = 
Mathematics
Solve.A train traveled m mi at a speed of s mph. A bus following the same route traveled 4 mph slower. How much longer did the bus take than the train to make this trip? Write the answer as a single rational expression.
A. 
hr
B. 
hr
C. 
hr
D. 
hr
Mathematics
Find the difference. 
- 
A. - 
B. 
C. - 
D. 
Mathematics