Answer the question.How many planes are determined by 5 points, no three of which are collinear?
A. 30
B. 60
C. 10
D. 20
Answer: C
Mathematics
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Provide an appropriate response.Find the x-coordinate of the vertex of a graph of the quadratic function 
A. - 
B. 
C. 
D. - 
E. none of the above
Mathematics
Use mathematical induction to prove the following.1 ? 3 + 2 ? 4 + 3 ? 5 + . . . + n(n + 2) = 
What will be an ideal response?
Mathematics
Solve.The figure shows the graphs of the cost and revenue functions for a company that manufactures and sells binoculars. 
At the break-even point both cost and revenue are what?
A. $750 B. $2700 C. $2250 D. $1500
Mathematics
Find the x- and y-intercepts of the graph of the equation. 
+ 
= 5
A. x-intercept: 15; y-intercept: 10 B. x-intercept: 10; y-intercept: 15 C. x-intercept: 8; y-intercept: 7 D. x-intercept: 2; y-intercept: 3
Mathematics