Write the standard equation for the following circle.
A. (x + 2)2 + (y - 2)2 = 9
B. (x - 2)2 + (y + 2)2 = 9
C. (x - 2)2 + (y + 2)2 = 3
D. (x + 2)2 + (y - 2)2 = 3
Answer: A
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Simplify the exponential expression.
A. x16
B. 
C. x4
D. 
Solve the problem.Suppose that the radius r and volume V = 
?r3 of a sphere are differentiable functions of t. Write an equation that relates dV/dt to dr/dt.
A. 
= 4?r2
B. 
= 
?r2
C. 
= 3r2
D. 
= 4?
Solve the problem.Crafty Bill's Cool Car Sales opened as a used car sales lot in 2006. The graph shows the number of cars sold as a function of time. What is the domain of this function if we consider only the indicated points? 
A. {2005, 2011} B. {2006, 2007, 2008, 2009, 2010} C. {2006, 2010} D. {2005, 2006, 2007, 2008, 2009, 2010, 2011}
Solve the exponential equation. Use a calculator to obtain a decimal approximation, correct to two decimal places, for the solution.84x = 2.4
A. {0.08} B. {1.68} C. {0.11} D. {1.60}