Find an equation of the circle with the given center and radius.Center (9, 2), radius 
A. (x + 9)2 + (y + 2)2 = 7
B. (x - 2)2 + (y - 9)2 = 49
C. (x - 9)2 + (y - 2)2 = 7
D. (x + 2)2 + (y + 9)2 = 49
Answer: C
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Find the absolute extreme values of the function on the interval.f(x) = |x - 5|, 4 ? x ? 10
A. absolute maximum is 5 at x = 10; absolute minimum is 0 at x = 5 B. absolute maximum is -1 at x = 4; absolute minimum is 5 at x = 10 C. absolute maximum is 5 at x = 10; absolute minimum is 1 at x = 4 D. absolute maximum is 1 at x = 4; absolute minimum is 0 at x = 5
Two marbles are drawn without replacement from a box with 3 white, 2 green, 2 red, and 1 blue marble. Find the probability.The second marble is white given the first marble is blue.
A. 
B. 
C. 
D. 
Add the numbers.26,420 + 9016
A. 116,580 B. 34,436 C. 35,436 D. 35,636
Solve the problem.The hydrogen potential, pH, of a substance is defined by pH = -log [H+], where [H+] is measured in moles per liter. Find the pH of a sample of lake water whose [H+] is 3.05 × 10-9 moles per liter. (Round to the nearest tenth.)
A. 8.5 B. 10.1 C. 7.3 D. 6.4