Sandy is 15 years older than Karen. The sum of Sandy's age and Karen's age is 69. How old is Sandy and Karen?
2 answers:
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Answer:
(5, -12)
Step-by-step explanation:
Put -12 in the equation for y and solve for x:
-12 = -3x +3
4 = x -1 . . . . . . . . divide by -3
5 = x . . . . . . . . . add 1
The solution to the system shown here is ...
(x, y) = (5, -12)
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This is confirmed by a graphing calculator.
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None of the offered answer choices is correct.
