1. Mandy kept track of the trade-in value of a collector’s coin for several months through February of this year. She determined the line of best fit for the data was [tex]y = 4x + 12[/tex], where [tex]y[/tex] is the trade-in value, in dollars, [tex]x[/tex] months after February of this year.
According to the equation, when will the trade-in value of the coin be $44?
A) December of the same year
B) October of the same year
C) April of the following year
D) June of the following year
Answer (2)
44 = 4x + 12
32 = 4x
X = 8 months after February = October of the same year. That's choice (b).
The trade-in value of the coin will reach $44 eight months after February, which is in October of the same year. Therefore, the chosen option is (B).
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