State whether the vectors are parallel, orthogonal, or neither.v = 2i + j,
w = i - 2j
A. Parallel
B. Orthogonal
C. Neither
Answer: B
Mathematics
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Solve the problem.The weekly sales in thousands of items of a product has a seasonal sales record approximated by 
in weeks with 
referring to the first week in the year). During which 
will the sales equal 73,590 items?
A. week 4 and week 47 B. week 30 and week 47 C. week 21 and week 30 D. week 4, week 20, and week 52
Mathematics
Use the quadratic formula to solve the equation. Simplify any radicals.x2 + 6x + 4 = 0
A. {3 ± 
}
B. {2}
C. {-3 ± 
}
D. {
± 3}
Mathematics
Solve for y in terms of x.
What will be an ideal response?
Mathematics
Factor the polynomial completely.2x2y2 - 50y2
A. 2(x + 5y)(x - 5y) B. 2y2(x + 5)(x - 5) C. 2(xy + 5)(xy - 5) D. 2y2(x - 5)2
Mathematics