the relationship between the number of months and cumulative cell - phone cost is represented by the scatter…

the relationship between the number of months and cumulative cell - phone cost is represented by the scatter plot shown.\na line of best fit for this data is $c = 51m+4.4$, where $c$ is the cumulative cell phone cost and $m$ is the number of months.\nusing this data, which value is the best prediction of the cumulative cell phone cost after 18 months?\na. $918\nb. $923\nc. $940\nd. $990

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