Solve the problem.Only one of the following equations does not require Step 1 of the method for completing the square. Which one is it?
A. (3x + 5)2 = 7
B. (3x + 5)(x - 7) = 0
C. x2 + x = 7
D. 3x2 + 5x - 7 = 0
Answer: C
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Find the center (h, k) and radius r of the circle. Graph the circle.x2 + y2 + 8x + 10y + 37 = 0 
A. (h, k) = (-4, -5); r = 2
B. (h, k) = (-4, 5); r = 2
C. (h, k) = (4, 5); r = 2
D. (h, k) = (4, -5); r = 2
Find A-1 without a calculator.A = 
A. A-1 = 
B. A-1 = 
C. A-1 = 
Solve the problem.You have 184 feet of fencing to enclose a rectangular region. Find the dimensions of the rectangle that maximize the enclosed area.
A. 46 ft by 46 ft B. 92 ft by 92 ft C. 48 ft by 44 ft D. 92 ft by 23 ft
Solve the problem.To estimate the number of people in Springfield, population 10,000, who have a swimming pool in their backyard, 250 people were interviewed. Of those polled, 79 had a swimming pool. How many people in the city might one expect to have a swimming pool? (Round to the nearest whole number, if necessary.)
A. 2 people B. 3160 people C. 316 people D. 31,646 people