Find an equation of variation for the given situation.y varies inversely as x, and y = 15 when x = 19
A. y = 
B. y = 
C. y = 285x
D. y = 
Answer: B
Mathematics
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Specify the center and radius of the circle.5x2 + 5y2 - 40x + 50y + 160 = 0
A. center: (-5, 4); radius: 3 B. center: (-4, 5); radius: 9 C. center: (5, -4); radius: 9 D. center: (4, -5); radius: 3
Mathematics
Graph the piecewise linear function.f(x) = 
A. 
B. 
C. 
D. 
Mathematics
Choose the correct graph of the function.f(x) = - 
A. 
B. 
C. 
D. 
Mathematics
Simplify. Write the answer with positive exponents.
A. y10
B. y14
C. 
D. 
Mathematics