The correct answer is ： 92
y = 7.112 + 3.949x
If x = 19, trend in sales for month 19 = 7.112 + (3.949 x 19) = 82.143
Seasonally-adjusted trend value = 82.143 x 1.12 = 92
If you failed to select the correct option, rework the calculation carefully. You shouldn't have too much trouble with this question since it is just a matter of plugging in a value for x into the equation given in the question.
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