<PRE><B>Question 1190949</B>
c = 120 + 110 * x
c is the cost
120 is the installation fee
110 is the cost per month
x is the number of months
the equation is:
c = 120 + 110 * x = 1660
subtract 120 from both sides of this equation to get:
110 * x = 1540
divide both sides of this equation by 110 to get:
x = 14
c = 120 + 110 * 14 becomes 1660.
this confirms the number of months is correct.
your solutiion is 14 months.
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