Solve the system by the substitution method.
A. (7, 3), (-7, -3), (3, 7), (-3, -7)
B. (7, 3), (3, 7), (21, 1), (1, 21)
C. (7, 3), (-7, -3)
D. (7, 3), (3, 7)
Answer: A
Mathematics
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A. 
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C. -2 - 
D. 
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Fill in the blank(s) with the appropriate word(s).
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A. (x + 4)(x + 4) B. (7x - 12)(x + 4) C. (7x + 4)(x + 4) D. (x - 12)(x + 4)
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Convert the angle in radians to degrees.- 
?
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