Solve the problem.How many distinct triangles are determined by 7 points lying on a circle, where the vertices of each triangle are chosen from the 7 points ?
A. 35
B. 840
C. 21
D. 210
Answer: A
Mathematics
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Use the Trapezoidal Rule with n = 4 steps to estimate the integral.
A. 
B. 
C. 49
D. 
Mathematics
Provide an appropriate response. National sales of a certain product have increased 54%. If there were 98.6 billion dollars in sales last year, how many dollars had the sales increased?
A. 151.844 billion B. 45.356 billion C. 34.574 billion D. 1,079.46 billion
Mathematics
Graph the system of inequalities.2x + 3y ? 6 x - y ? 3 y ? 2
A.
B. 
C. 
D. 
Mathematics
Simplify the expression using the order of operations.(5 - 42)2
A. -121 B. -6 C. 121 D. 9
Mathematics