Use Descartes' Rule of Signs to determine the possible number of positive real zeros and the possible number of negative real zeros for the function.P(x) = -8x4 - 4x3 - 7x2 - 4x + 9
A. 1 positive; 1 negative
B. 1 positive; 2 negative
C. 1 positive; 1 or 3 negative
D. 0 or 2 positive; 1 or 3 negative
Answer: C
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Tell whether a linear model or a quadratic model is appropriate for the data. If a quadratic model is appropriate, then decide also whether the lead coefficient should be positive or negative.The amount of water in a pool as it is being filled, as a function of time.
A. Quadratic; leading coefficient positive B. Linear C. Quadratic; leading coefficient negative
Find the length of the line segment.
A. 3
B. 3
C. 27
D. 27
Suppose that 30% of all small businesses are undercapitalized, 40% of all undercapitalized small business fail, and 20% of all small businesses that are not undercapitalized fail. A small business is chosen at random. Find the probability that the small business is not undercapitalized and yet fails.
A. 0.12 B. 0.20 C. 0.40 D. 0.14 E. none of these
The prices of a 13-ounce bottle of soda at three different convenience stores are $1.04, $1.21, and $1.12 respectively. Find the average price for the bottle of soda. Round your answer to two decimal places.
A. 0.9 B. 1.12 C. 0.84 D. 1.69 E. 3.37