Determine the intervals of concavity for the function.
?
?
A. Concave downward on 
Concave upward on 
B. Concave downward on
Concave upward on 
C. Concave downward on
D. Concave downward on
Concave upward on 
E. Concave downward on
Concave upward on 
Answer: A
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Perform the indicated operation. Simplify if possible.
+ 
A. 
B. 
C. 8x
D. 
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. Parallel, same direction B. Parallel, opposite directions C. Perpendicular D. Neither
Solve.A city government budgeted $29.8 million for public transportation. This was $19.7 million more than was budgeted for parks and recreation. How much was budgeted for parks and recreation?
A. $11.1 million B. $9.6 million C. $14.1 million D. $10.1 million
Solve the problem.Find an equation of the circle that passes through the points (4, 6), (-6, 2), and (1, -3).
A. 
2 + 
2 = 
B. 
2 + 
2 = 
C. 
2 + 
2 = 
D. 
2 + 
2 = 