Multiply. Write the answer in descending order.4x4(11x + 5)
A. 44x + 20
B. 64x4
C. 44x5 + 20x4
D. 44x5 + 5
Answer: C
Mathematics
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Determine if the graph of the function is concave up or concave down.y = -x2 + 1
A. Concave up B. Concave down
Mathematics
Match the story with the correct figure.Mark started out by walking up a hill for 5 minutes. For the next 5 minutes he walked down a steep hill to an elevation lower than his starting point. For the next 10 minutes he walked on level ground. For the next 10 minutes he walked uphill. Determine which graph of elevation above sea level versus time illustrates the story.
A. 
B. 
C.
D. 
Mathematics
Write the expression in standard form.(4 - 9i) + (4 + 5i)
A. -8 + 14i B. 8 + 4i C. -8 + 4i D. 8 - 4i
Mathematics
Graph the system of inequalities.x2 + y2 ? 9y - x2 > 0
A. 
B. 
C. 
D. 
Mathematics