Solve the problem.Assume an exponential function has a starting value of 10 and a growth rate of 40%. Write an equation to model the situation.
A. y = 10 ? 0.40x
B. y = 10 ? 1.40x
C. y = 10 ? 1.60x
D. y = 10 ? 0.60x
Answer: B
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Find the volume of the solid generated by revolving the region about the given line.The region bounded above by the line 
, below by the curve 
, and on the right by the line 
, about the line 
A. 
?
B. 
?
C. 
?
D. 
?
Solve the problem.The cost in millions of dollars for a company to manufacture x thousand automobiles is given by the function C(x) = 5x2 - 40x + 144. Find the number of automobiles that must be produced to minimize the cost.
A. 20 thousand automobiles B. 64 thousand automobiles C. 8 thousand automobiles D. 4 thousand automobiles
Perform the indicated arithmetic.12
+ 
A. 8
B. 7
C. 8
D. 7
Solve the system by the method of your choice. Identify systems with no solution and systems with infinitely many solutions, using set notation to express their solution sets.y = 15 - 2x2x + y = 19
A. {(6, 9)}
B. {(3, 13)}
C. {(x, y) 
}
D. ?