Let f and g real functions defined by f(x) =2x +1 and g (x) = 4x-7. (i) For what real number x

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Let f and g real functions defined by f(x) =2x +1 and g (x) = 4x-7. (i) For what real number x,f(x)=g(x)? (ii) x,f(g) `lt` g(x)?
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