Determine whether the function is one-to-one.f(x) = -(x + 4)2
A. One-to-one
B. Not one-to-one
Answer: B
Mathematics
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Determine the period and range for the function.y = 2 cos(x + ?/6)
A. period: ?; range: [-2, 2]
B. period: 2?; range: 
C. period: ?; range: [0, 2]
D. period: 2?; range: [-2, 2]
Mathematics
Find the missing angle measure.
A. 23° B. 67° C. 113° D. 46°
Mathematics
Find the associated doubling time.
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics
Solve by substitution and check.3x + 9y = 3 x = -3y - 1
A. (3, 1) B. Infinitely many solutions C. (1, 3) D. No solution
Mathematics