Solve the following system of equations. -7x - y = 13
8x + y = -14
A (1 ,-6)
B (-1,-6)
C (1,6)
D (-1, 6)

The table shows the webster family’s monthly expenses for the first three months of the year. they are $2,687.44, $2,613.09, and $2,808.64. what is the average monthly expenditure for all expenses?

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The triangles in the diagram are congruent. if mzf = 40°, mza = 80°, and mzg = 60°, what is mzb?