Question

The scatter plot shows the monthly balance of a bank account over the course of several months. The equation of the trend line shown is y=12.4x+106. After how many months will the account balance be ​$​329.20?

Answer 1

It will take 18 months.

Explanation:

y = 12.4x + 106 I am assuming that the variable x stands for the number of months.

329.20 = 12.4x + 106 Subtract 106 from both sides

329.20 - 106 = 12.4x + 106 - 106

223.20 = 12.4x Divide both sides by 12.4

18 = x

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