Solve the problem.The logistic growth function f(t) = 
describes the population of a species of butterflies 
after they are introduced to a non-threatening habitat. How many butterflies were initially introduced to the habitat?
A. 2 butterflies
B. 90 butterflies
C. 4 butterflies
D. 440 butterflies
Answer: B
Mathematics
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Express the area of the region bounded by the given line(s) and/or curve(s) as an iterated double integral.The curve 
and the lines 
and 
A. 
B. 
C. 
D. 
Mathematics
Simplify the polynomial by combining like terms if possible. Write the answer in descending order.9x2 - 7 + 3x2 + x2 - 8
A. 12x2 + 15 B. 13x2 - 15 C. 13x4 - 15 D. 11x2 - 15
Mathematics
Solve for the specified variable. Assume that all other variables are nonzero.x2 - 3cx - 10c2 = 0; for x
A. x = ± 
B. x = ± 
C. x = 2c, -5c
D. x = -2c, 5c
Mathematics
Graph the parabola.y = 
x2
A. 
B. 
C. 
D. 
Mathematics