Using the absolute-value symbol, express each fact.
(a) x is less than 3 units from 7.
(b) x differs from 2 by less than 3.
(c) x is no more than 5 units from 7.
(d) The distance between 7 and x is 4.
(e) x + 4 is less than 2 units from 0.
(f) x is between −3 and 3, but is not equal to 3 or −3.
(g) x < −6 or x > 6.
(h) The number x of hours that a machine will operate efficiently differs from 105 by less than 3.
(i) The average monthly income x (in dollars) of a family differs from 850 by less than 100.
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