Simplify the absolute value expression.|-21.2|
A. -21.2
B. 0
C. 42.4
D. 21.2
Answer: D
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Provide an appropriate response.Use a graphing calculator to determine which equation corresponds to the graph. 
A. y = 
x - 2
B. y = - 
x + 3
C. y = - 
x - 3
D. y = 
x + 2
Solve the problem.The table shows the population of a certain city in various different years. Use regression to find values for a and b so that f(x) = axb models this data, where x represents the number of years since 1990 and f(x) is the population of the city in hundreds of thousands. Round your answers to 4 decimal places.
A. a ? 2.1375, b ? 0.4432 B. a ? 2.6352, b ? 0.4756 C. a ? 1.8506, b ? 0.5121 D. a ? 1.7025, b ? 0.5375
Provide an appropriate response.Find the error in the following "proof" that the area inside the lemniscate 
and then find the correct area. A = 
= 
= 
= 0
What will be an ideal response?
Find the sum.
A. 35 B. -3 C. 30 D. 9