Provide an appropriate response.
Determine which ordered pair is a solution to the equation x - 2y = 7
A. (4, -3)
B. (1, -3)
C. (-7, 0)
D. (3, 2)
Answer: B
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Find an equation of the circle satisfying the given conditions.Center at (0, -3), radius 
A. (x + 3)2 + y2 = 100 B. (x - 3)2 + y2 = 100 C. x2 + (y + 3)2 = 10 D. x2 + (y - 3)2 = 10
Solve the problem.Two recording devices are set 3600 feet apart, with the device at point A to the west of the device at point B. At a point on a line between the devices, 200 feet from point B, a small amount of explosive is detonated. The recording devices record the time the sound reaches each one. How far directly north of site B should a second explosion be done so that the measured time difference recorded by the devices is the same as that for the first detonation?
A. 1241.22 ft B. 1788.85 ft C. 425 ft D. 7375.64 ft
Find the indicated rate.Tim's car will go 594.5 miles on 20.5 gallons of gasoline in city driving. What is the rate in miles per gallon?
A. 
mpg
B. 29.5 mpg
C. 29 mpg
D. 28.5 mpg
Add or subtract as indicated. Simplify the result whenever possible. Write any answer that contains an improper fraction as a mixed number.
- 
A. 9
B. 
C. 
D. 