Use the partial sum formula to find the partial sum of the given arithmetic sequence.Find the sum of the first five terms of the arithmetic sequence: -3, -10, -17, . . . .
A. -50
B. 85
C. -30
D. - 85
Answer: D
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Use the maximum/minimum finder on a graphing calculator to determine the approximate location of all local extrema.f(x) = 0.01x5 - x4 + x3 + 8x2 - 7x + 9
A. Approximate local maxima at -1.861 and 2.247; approximate local minima at 0.423 and 79.192 B. Approximate local maxima at -1.804 and 2.153; approximate local minima at 0.364 and 79.135 C. Approximate local maxima at -1.861 and 2.247; approximate local minimum at 0.423 D. Approximate local maxima at -1.789 and 2.202; approximate local minima at 0.368 and 79.147
Use Bayes' rule to find the indicated probability.Quality Motors has three plants. Plant 1 produces 35% of the car output, plant 2 produces 20% and plant 3 produces the remaining 45%. One percent of the output of plant 1 is defective, 1.8% of the output of plant 2 is defective and 2% of the output of plant 3 is defective. The annual total production of Quality Motors is 1,000,000 cars. A car chosen at random from the annual output and is found defection. What is the probability that it came from plant 2?
A. 0.35 B. 0.559 C. 0.224 D. 0.217
Find the angle between vectors v and w. Round the answer to the nearest tenth of a degree.v = 
, w = 
A. 121.3° B. 31.3° C. 77.7° D. 58.7°
McKenzie found the correlation coefficient on a set of data to be -0.20. Which term best describes the correlation?
A. strong positive B. strong negative C. weak positive D. weak negative