Solve the problem.The number of bacteria growing in an incubation culture increases with time according to 
where t is time in days. Find the number of bacteria when 
and 
.
A. 6900; 172,500
B. 6900; 69,000
C. 6900; 21,562,500
D. 34,500; 172,500
Answer: A
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Determine the probability using a probability tree.A bent coin lands tails up with a probability 0.8. If the coin is flipped three times, determine P(at least one tail appears in the three flips).
A. 0.008 B. 0.992 C. 0.032 D. 0.488
Solve.A rectangular garden measures 5.8 yd by 24.38 yd. What is its area?
A. 33.64 yd2 B. 282.808 yd2 C. 30.18 yd2 D. 141.404 yd2
Solve the problem.A person has hired an investment broker to buy stock. The broker has three different stock funds that are of interest, but each is sensitive to a certain economic indicator that is impossible to predict. The indicator will be positive, neutral, or negative. The table below shows the payoffs in thousands of dollars. Find the strategy that the broker should recommend to maximize the expected value of the investment. 
A. Invest in Stock A with probability 0, invest in Stock B with probability 1, and invest in Stock C with probability 0. B. Invest in Stock A with probability 1, invest in Stock B with probability 0, and invest in Stock C with probability 0. C. Invest in Stock A with probability 1/3, invest in Stock B with probability 1/3, and invest in Stock C with probability 1/3. D. Invest in Stock A with probability 5/13, invest in Stock B with probability 0, and invest in Stock C with probability 8/13.
Use the given zero to completely factor P(x) into linear factors.Zero: i; P(x) = 2x5 + 2x4 - 6x3 - 6x2 - 8x - 8
A. (x - 2)(x + 2)(x + 1)(x + (2 + i))(x - (2 - i)) B. (x - 2)(x + 2)(x + 1)(x + i)(x - i) C. (x + 2)(x + 2)(x + 1)(x + i)(x - i) D. (x + 2)(x + 1)(x + (2 + i))(x - (2 - i))