Graph the ellipse. Label the intercepts.45x2 + y2 = 225
A. (-5, 0), (5, 0), (0, -
), (0, 
)
B. (-
, 0), (
, 0), (0, -
), (0, 
)
C. (-
, 0), (
, 0), (0, -15), (0, 15)
D. (-5, 0), (5, 0), (0, -15), (0, 15)
Answer: C
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Translate the sentence to an algebraic inequality.The number of people at a concert is less than or equal to 3472.
A. x ? 3472 B. x ? 3472 C. x < 3472 D. x > 3472
Solve the equation.3x = 27
A. 81 B. 8 C. 27 D. 9
Use Bayes' rule to find the indicated probability.Two stores sell a certain MP3 players. Store A has 34% of the sales, 5% of which are of defective items, and store B has 66% of the sales, 1% of which are of defective items. The difference in defective rates is due to different levels of pre-sale checking of the product. A person receives a defective item of this product as a gift. What is the probability it came from store B?
A. 0.275 B. 0.22 C. 0.5667 D. 0.7083
Solve the problem.The function A = 153e0.025t models the population of a particular city, in thousands, t years after 2011. When will the population of the city reach 178 thousand? Is the population increasing or decreasing? Explain.
A. 2016; Decreasing; The growth rate, -0.025, is negative B. 2019; Decreasing; The growth rate, -0.025, is negative C. 2017; Increasing; The growth rate, 0.025, is positive. D. 2018; Increasing; The growth rate, 0.025, is positive.