Find an equation of the circle with the given center and radius.Center (0, -10), radius 5
A. (x - 10)2 + y2 = 25
B. x2 + (y + 10)2 = 25
C. (x + 10)2 + y2 = 25
D. x2 + (y - 10)2 = 5
Answer: B
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Solve the inequality and give the solution set in set builder notation.
? 2
A. {x|x < -2 or x ? 0} B. {x|x ? -4 or x > -2} C. {x|-4 ? x < -2} D. {x|-2 < x ? 4}
Use a system of linear equations to solve the problem.Two cars leave a city and head in the same direction. After 3 hours, the faster car is 21 miles ahead of the slower car. The slower car has traveled 132 miles. Find the speeds of the two cars.
A. 46 mph and 53 mph B. 70 mph and 77 mph C. 37 mph and 44 mph D. 44 mph and 51 mph
Solve.Elissa sells two breeds of dogs, Alaskan Malamutes and Great Pyrenees. She has 92 feet of fencing to enclose two adjacent rectangular dog kennels, one for each breed. An existing fence is to form one side of the kennels, as in the drawing below. Suppose the total length of the two kennels is x feet. Express the total area of the two kennels as a function of x. Graph the function and from the graph determine the value of x that will yield the maximum area.
A. 45 feet
B. 46 feet
C. 48 feet
D. 
feet
Multiply and simplify.
? 
A. 1
B. 
C. -1
D. 0