Simplify the expression by combining like terms.6x + 3x
A. 9 + x
B. 9x
C. 3x
D. 18x
Answer: B
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Find the interval of convergence of the series.
A. -? < x < ? B. 0 ? x < 2 C. x < 2 D. 0 < x < 2
Use a sum-to-product identity to rewrite the expression.sin 8° sin 28°
A. 2cos 18.0° cos (-10.0°) B. 2sin 18.0° sin (-10.0°) C. 2cos 18.0° sin (-10.0°) D. 2sin 18.0° cos (-10.0°)
Add and simplify. Write the answer as an improper fraction as needed. 
+ 
A. 
B. 1
C. 
D. 
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