Simplify the expression.9 + 2(x + 6y)
A. 9 + 2x + 6y
B. 9 + 12xy
C. 11x + 6y
D. 9 + 2x + 12y
Answer: D
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Solve the equation for y in terms of x.ln y + 2.1972 = 8 ln x
A. y = x8 - 9
B. y = x8 - 2.1972
C. y = 
D. y = 
Simplify the expression. Assume all variables represent positive real numbers.
A. 81a
B. 3
C. 3a2
D. 3a
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 equation of the tangent line to the curve when x has the given value.f(x) = 
; x = 49
A. y = 
x + 6
B. y = 
x + 
C. y = 
x - 
D. y = - 
x + 