The size N, in thousands, of a certain animal population after t years is given in the table below. Use exponential regression to model the population size as a function of time. Round your answer to two decimal places.
t 0 1 2 3 4 N 6.68 8.57 10.77 13.94 18.08?
A. 
B. ?
C. ?
D. ?
Answer: A
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Even with most of the problem missing, it is possible to tell whether a suggested answer is reasonable. Determine whether the answer given is reasonable. If it is unreasonable, move the decimal point or insert a decimal point to make the answer reasonable.How much does Anne's father weigh? 15.2 pounds
A. Unreasonable, should be 152 pounds B. Unreasonable, should be 1.52 pounds C. Reasonable D. Unreasonable, should be 1520 pounds
Determine whether the equation defines y as a function of x.y = -2x2 + 7x + 2
A. Yes B. No
Perform the indicated operations.(5x7 + 5x5 + 6x) + (7x7 - 7x5 - 8x)
A. 13x7 - 2x5 - 3x B. 8x13 C. 12x7 - 2x5 - 2x D. 12x - 2x7 - 2x5
Find the center, transverse axis, vertices, and foci of the hyperbola.4y2 - 100x2 = 400
A. center at (0, 0)
transverse axis is x-axis
vertices: (-2, 0), (2, 0)
foci: (- 2
, 0) , (2
, 0)
B. center at (0, 0)
transverse axis is y-axis
vertices: (0, -10), (0, 10)
foci: (- 2
, 0) , (2
, 0)
C. center at (0, 0)
transverse axis is y-axis
vertices at (0, -10) and (0, 10)
foci at (0, - 2
) and (0, 2
)
D. center at (0, 0)
transverse axis is x-axis
vertices: (-10, 0), (10, 0)
foci: (-2, 0), (2, 0)