Solve the problem.The population size of a culture of bacteria quadruples every day such that its size is modeled by the sequence 
where n is the number of the day just beginning. Find the size of the culture at the beginning of the third day and the size of the culture originally.
A. 1440 bacteria; 22
bacteria originally
B. 5760 bacteria; 90 bacteria originally
C. 1440 bacteria; 90 bacteria originally
D. 5760 bacteria; 360 bacteria originally
Answer: C
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Find the curvature of the space curve.r(t) = -9i + (t + 2)j +(ln(cos t) + 9)k
A. ? = csc t B. ? = sec t C. ? = sin t D. ? = cos t
Graph the inequality.x ? 2 
A. 
B. 
C. 
D. 
Solve the problem.A certain noise has intensity 2.69 × 108 I0. What is the decibel rating of this sound? Use the formula 
where I0 is a faint threshold sound, and I is the intensity of the sound."
A. 84 decibels B. 194 decibels C. 8 decibels D. 74 decibels
Solve the problem.A can has a surface area of 926 square inches. Its height is 7.35 inches. What is the radius of the circular top? Round to the nearest hundredth.
A. 9.01 in. B. 4.2 in. C. 20.05 in. D. 11.33 in.