Solve the problem.If a population is changed by either immigration or emigration, a model for the population is 
where y is the population at time t and f(t) is some function of t that describes the net effect of the emigration/immigration. Assume that k = 0.02 and y(0) = 10,000. Solve this differential equation for y, given that 
A. y = 250t + 12,500 + 22,500e-0.02t
B. y = -250t - 12,500 + 22,500e0.02t
C. y = 250t - 12,500 + 22,500e-0.02t
D. y = -250t - 12,500 + 22,500e-0.02t
Answer: B
Mathematics
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Make the following conversion in the U.S. system.108 ft2 = 
yd2
A. 12 yd2 B. 324 yd2 C. 972 yd2 D. 36 yd2
Mathematics
Find the product.5x4(-2x7 - 8x6 + 4)
A. -10x11 - 8x6 + 4 B. -10x11 - 40x10 + 20x4 C. -10x7 - 40x6 + 20 D. -10x11 - 40x10
Mathematics
Solve the logarithmic equation. Be sure to reject any value that is not in the domain of the original logarithmic expressions. Give the exact answer.log 4x = log 5 + log (x - 1)
A. 
B. {5}
C. 
D. {-5}
Mathematics
Provide an appropriate response.Explain the error in the following: x2 + 2x - 15 = (x - 5)(x + 3)
What will be an ideal response?
Mathematics