Solve.The coroner arrives at the scene of a murder at 11 p.m. She takes the temperature of the body and finds it to be 86.7° F. She waits 1 hour, takes the temperature again, and finds it to be 84.9° F. She notes that the room temperature is 67° F. When was the murder committed?
A. 7 p.m.
B. 5 p.m.
C. 8 p.m.
D. 6 p.m.
Answer: D
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Solve the problem.Find the foci and asymptotes of the following hyperbola:4y2 - 25x2 = 100
A. Foci: (
, 0), (-
, 0); Asymptotes: y = 
x, y = - 
x
B. Foci: (0, 
), (0, -
); Asymptotes: y = 
x, y = - 
x
C. Foci: (
, 0), (-
, 0); Asymptotes: y = 
x, y = - 
x
D. Foci: (0, 
), (0, -
); Asymptotes: y = 
x, y = - 
x
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 are expected in the habitat after 13 months?
A. 801 butterflies B. 451 butterflies C. 910 butterflies D. 10,400 butterflies
Express using positive exponents. Then, if possible, simplify.-4-2
A. -16
B. - 
C. 
D. 16
Factor completely. If the polynomial is prime, state this.8x2 - 8
A. 8(x + 1)(x - 1) B. 8(x - 1)2 C. (8x + 8)(x - 1) D. (8x + 1)(x - 8)