Solve.A computer sells for $1311. If the sales tax rate is 9.7%, what is the total price?
A. $127.17
B. $2582.67
C. $1438.17
D. $1271.67
Answer: C
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Solve for the angle ?, where 0 ? ? ? 2?sin2? = 
A. ? = 
, 
, 
, 
B. ? = 
, 
, 
, 
C. ? = 0, ?, 2?
D. ? = 
, 
, 
, 
Solve by the substitution method.6x + 12 = 6y3x + 2y = -31
A. (-7, -4) B. (-7, -5) C. No solution D. (-8, -4)
Find the center of mass of a thin plate covering the given region with the given density function.The region bounded by x = y2 and the line x = 16, with density ?(x) = y2
A. 
= 
, 
= 0
B. 
= 0, 
= 
C. 
= 
, 
= 0
D. 
= 
, 
= 0
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