Find the center and radius of the circle.2x2 + 2y2 + 12x + 20y + 66 = 0
A. (5, 3), r = 1
B. (3, 5), r = 1
C. (-5, -3), r = 1
D. (-3, -5), r = 1
Answer: D
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Find a set of polar coordinates for the point for which the rectangular coordinates are given.(-2
, 2)
A. 
B. 
C. 
D. 
Simplify the difference quotients 
and 
for the following function. Rationalize the numerator when necessary.f(x) = 5x + 3
A. 5; 5x - 5a B. 5x - 5h; 5x - 5a C. 5h; 5a D. 5; 5
Solve by graphing. Label the axes and show where the solution is located on the graph.The graph depicts a relationship between scores achieved on an unspecified standardized test and family income. Suppose the score for a test is 480 when the family income is $25,000 and is 530 when the family income is $55,000. Let x be the income and y be the score of the test. Graph the two given pairs of incomes and scores. Assume that the relationship is linear. Draw a line though the two previous points. From your graph, estimates the score if the family income is $40,000.
A. 
555
B. 
505
C. 
530
D. 
580
Factor. Check by multiplying.28a + 36b
A. 4(9a + 28b) B. 4(7a + 36b) C. 4(7a + 9b) D. 4(9a + 7b)