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OpenStudy (anonymous):
Find x if f(x) = 2x + 7 and f(x) = -1 ?
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OpenStudy (anonymous):
f(x) = -1 so -1 = 2x + 7 ^Now I am confused from there... -1 = 2*-1 + 7?
OpenStudy (sidsiddhartha):
you need to find x and u have already an equation -1=2x+7 2x=-8 x=-4
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