Decide whether the relation is a function.{(-6, 1), (-5, -6), (1, -6), (2, 8)}
A. Function
B. Not a function
Answer: A
Mathematics
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Simplify the radical. Assume that all variables represent positive numbers.
A. 4 B. 3 C. -2 D. ±2
Mathematics
Graph the function.y = 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.Find the perimeter and area of a rectangle whose length is 2 cm and width is 5 cm.
A. P = 8 cm, A = 20 cm2 B. P = 7 cm, A = 20 cm2 C. P = 14 cm, A = 10 cm2 D. P = 6 cm, A = 10 cm2
Mathematics
Solve the problem.A guitar string is plucked so that it vibrates with a frequency of 
Suppose the maximum displacement at the center of the string is 
Find an equation of the form 
to model this displacement. Round constants to 2 decimal places.
A. s(t) = 0.98 cos 395.84t B. s(t) = 0.49 cos 10.03t C. s(t) = 0.49 cos 395.84t D. s(t) = 0.98 cos 10.03t
Mathematics