Indicate whether the function is one-to-one.C = {(8, -6), (6, -8), (-7, 3), (7, -3)}
A. No
B. Yes
Answer: B
Mathematics
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Solve the problem.The index of refraction for air, Ia, is 1.0003.The index of refraction for water, Iw, is 1.3.If 
= 
, and A = 31.5°, find W to the nearest unit.
A. 24° B. 21° C. 22° D. 23°
Mathematics
Divide. If a quotient goes beyond the hundredths place, round to the nearest hundredth.25.6 ÷ .4
A. 6.40 B. 10.24 C. 64.00 D. 640.00
Mathematics
Factor completely.x3y - 5x2y2 - 36xy3
A. x(xy - 9y2)(x + 4y) B. y(x - 9y)(xy + 4y2) C. xy(x - 9y)(x + 4y) D. xy(x2 - 5x - 36y2)
Mathematics
Determine two functions, designated by y1 and y2, such that their union will give the graph of the given equation.x2 + 8x + y2 + 4y = 45
A. y1 = -2 + 
and y2 = -2 - 
B. y1 = -2 - x + 
and y2 = -2 - x + 
C. y1 = -2 + 
and y2 = -2 - 
D. y1 = 2 + 
and y2 = 2 - 
Mathematics