Write an equation of the line described.Through (8, -4), perpendicular to x = -9
A. y = -4
B. y = 8x - 4
C. y = 8
D. y = 4
Answer: A
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Write an inequality using the variable x that corresponds to the set graphed on the number line.
A. x ? 6 B. x > 6 C. x ? 6 D. x < 6
Calculate the circulation of the field F around the closed curve C.F = xy2i + x2yj; curve C is the counterclockwise path around C1 ? C2 : C1: 
0 ? t ? ?C2: r(t) = ti , -8 ? t ? 8
A. 0 B. 64 C. 8 D. 128
Find the character of the roots.w2 - 4w + 6 = 0
A. Exactly one rational solution B. Two different irrational solutions C. Two different imaginary solutions D. Two different rational solutions
Use multiplication to check the answer. If an answer is incorrect, find the correct answer.
A. Incorrect; should be 85 R7 B. Incorrect; should be 85 R5 C. Correct D. Incorrect; should be 84 R6