Describe a way in which the diagram above illustrates the unique plane postulate.

A.
Planes r and s intersect at line AB
B.
There is exactly one line, m, through points B and D.
C.
There is exactly one plane, s, through points A, B, and C.
D.
Plane rcontains points A and B and line /.

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Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.

Sophia wrote an equation to represent the revenue of a movie theater for one day. she let x represent the number of child tickets sold and y represents the nunver of adult tickets sold. if a child ticket cost $4, an adult ticket cost $6, and the total revenue for the daybwas $420, which equation could sophia use to represent the number of chikd and adult tickets that were sold?