Using the horizontal-line test, determine whether the function is one-to-one.f(x) = x3 - 2x + 1
A. Yes
B. No
Answer: B
Mathematics
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Complete the factoring.32x2 - 20xy - 63y2 = (8x + 9y)( )
A. 4x + 7y B. x - 63xy C. 4x - 7y D. 7x - 4y
Mathematics
Combine like terms.19x + 15 - 12x - 4
A. 7x + 15 - 4 B. 31x + 19 C. -7x + 11 D. 7x + 11
Mathematics
Solve the equation by completing the square.4x2 + 18x = -15
A. 
, 
B. 
, 
C. 
, 
D. 
, 
Mathematics
Write the first five terms of the geometric sequence.a1 = 160, r = 
A. 80, 40, 20, 10, 5 B. 10, 20, 40, 80, 160 C. 160, 80, 40, 20, 10 D. 5, 10, 20, 40, 80
Mathematics