Determine whether the equation defines y as a function of x. y2 + x = 8
A. function
B. not a function
Answer: B
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Determine whether the set is well defined or not well defined. The set of five countries in Europe having the smallest population
A. well defined B. not well defined
Solve the problem.Find the center of mass of the thin semicircular region of constant density 
bounded by the 
and the curve 
.
A. 
= 0, 
= 
B. 
= 0, 
= 
C. 
= 0, 
= 
D. 
= 0, 
= 
Determine the vertex of the graph of the parabola.y = x2 - 4x + 6
A. (2, -2)
B. (2, 2)
C. 
D. (2, -4)
Solve.A painting was sold in 1985 for $ 1 million. The painting was then resold in 1996 for $ 10 million. Assume that the painting's value increases exponentially. Find the exponential growth rate k, and determine the exponential growth function, assuming V0 = 1. (Round decimals to three places.)
A. k = 0.209; V(t) = 1e0.209, where V(t) is in millions and t is the number of years after 1985. B. k = 0.192; V(t) = 1e0.192t, where V(t) is in millions and t is the number of years after 1985. C. k = 0.209; V(t) = 1e0.209t, where V(t) is in millions and t is the number of years after 1985. D. k = 0.209; V(t) = 1e0.209t, where V(t) is in millions and t is the number of years after 1997.