Write the standard form of the equation of the circle with radius r and center (h, k).r = 2; (h, k) = (-7, 0)
A. x2 + (y + 7)2 = 2
B. (x + 7)2 + y2 = 4
C. x2 + (y - 7)2 = 2
D. (x - 7)2 + y2 = 4
Answer: B
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Write the given statement as an equation.John kept track of the time it took him to drive to college from his home and the speed at which he drove. He found that the time t varies inversely as the speed r.
A. t = 
B. r = kt
C. t = kr
D. t = 
Solve the problem.The probability of a rainy day is 0.30, whereas the probability that a rainy day is followed by another rainy day is 0.45. What is the probability of two rainy days following each other?
Fill in the blank(s) with the appropriate word(s).
Find the slope of the line.x = 10
A. 0 B. Not defined C. 1 D. 10
Find the equation of a circle satisfying the given conditions.Center: (-7, 0); radius: 
A. (x - 7)2 + y2 = 17 B. x2 + (y - 7)2 = 289 C. x2 + (y + 7)2 = 289 D. (x + 7)2 + y2 = 17