Determine where the function is concave upward.
?
?
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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State if the vectors a and b are perpendicular, parallel, or neither. If a and b are parallel, state whether they point in the same direction or in opposite directions.a = 
, b = 
A. Perpendicular B. Parallel, opposite directions C. Parallel, same direction D. Neither
Mathematics
State whether the parabola opens upward or downward.f(x) = x2 + 20
A. Upward B. Downward
Mathematics
Write an equation of the line.
A. y = -2
B. y = -3x - 2
C. y = - 
x - 2
D. y = -3x
Mathematics
Simplify. Write the answer in standard form.(2.1 × 10-3)(9 × 10-2)
A. 0.00000189 B. 0.0000189 C. 0.00189 D. 0.000189
Mathematics