Graph the circle. State the center and radius of the circle.x2 + y2 - 4x - 2y - 4 = 0
A. center (-2, -1); r = 3
B. center (2, 1); r = 3
C. center (-2, -1); r = 3
D. center (-2, -1); r = 3
Answer: B
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Write the expression as the sum or difference of multiples of logarithms.logb 
A. 
logb x + 4 logb y - 
logb z
B. 
logb x9 + logb y8 - logb z5
C. 
logb x - 4 logb x + 
logb z
D. 
logb x + 8 logb y - 5 logb z
Use the graph to answer the question.Find the domain and range of the rational function graphed below.
A. Domain: (-?, 2) ? (2, ?); Range: (0, ?) B. Domain: (-?, 2) ? (2, ?); Range: (1, ?) C. Domain: (2, ?); Range: (0, ?) D. Domain: (-?, 2) ? (2, ?); Range: (-?, ?)
List the critical values of the related function. Then solve the inequality.
> 0
A. 0; (0, ?)
B. - 
; 
C. 
; 
D. - 
; 
Solve the problem.The surface area of a human body (in square meters) is approximated by 
where W is the weight of the person in kilograms and H is the height in meters. Find A if 
and 
Round your answer to two decimal places.
A. 1.88 m2 B. 1.79 m2 C. 1.68 m2 D. 1.75 m2