Find the center of the hyperbola.25y2 - 4x2 = 100
A. (0, 2)
B. (5, 0)
C. (2, 5)
D. (0, 0)
Answer: D
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Evaluate the formula for the given quantity.d = rt; given r = 55 miles per hour, t = 6 hours
A. d = 
miles
B. d = 61 miles
C. d = 660 miles
D. d = 330 miles
Graph the function. Let f(x) = 
represent the floor function and let g(x) = 
represent the ceiling function.f(x) = 5 + 
A. 
B. 
C. 
D. 
Provide an appropriate response.Are the graphs of y = 5x + 6 and y = 5x + 7 parallel? Explain how you know.
A. The graphs are parallel. The slope of y = 5x + 6 is 5 and the slope of y = 5x + 7 is also 5. Since the slopes of the two lines are equal, their graphs are parallel. B. The graphs are parallel. The slope of y = 5x + 6 is 6 and the slope of y = 5x + 7 is 7. Since the slopes of the two lines are not equal, their graphs are parallel. C. The graphs are not parallel. The slope of y = 5x + 6 is 5 and the slope of y = 5x + 7 is also 5. Since the slopes of the two lines are equal, their graphs are not parallel. D. The graphs are not parallel. The slope of y = 5x + 6 is 6 and the slope of y = 5x + 7 is 7. Since the slopes of the two lines are not equal, their graphs are not parallel.
Solve the problem.A college student invests $7000 in an account paying 
per year compounded annually. In how many years will the amount at least quadruple? Round to the nearest tenth when necessary.
A. 19.5 yr B. 18 yr C. 22.2 yr D. 20.9 yr