Find the slope of the line. 
A. 7
B. -1
C. -7
D. 1
Answer: B
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Find the center and radius of the circle.(x + 5)2 + y2 = 81
A. (-5, 0), r = 9 B. (5, 0), r = 81 C. (0, 5), r = 9 D. (0, -5), r = 81
Determine if the set is the empty set.{x|x is the number of living U.S presidents born before 1700}
A. Yes, it is the empty set. B. No, it is not the empty set.
Write a formula for the nth term of the arithmetic sequence. Use the formula to find the 20th term of the sequence.2, 8, 14, 20, 26, . . .
A. an = 6n - 4; a20 = 116 B. an = 6n - 2; a20 = 118 C. an = 4n - 6; a20 = 74 D. an = 4n - 2; a20 = 78
Solve the problem.A developer wants to enclose a rectangular grassy lot that borders a city street for parking. If the developer has 344 feet of fencing and does not fence the side along the street, what is the largest area that can be enclosed?
A. 22,188 sq ft B. 14,792 sq ft C. 29,584 sq ft D. 7396 sq ft