The first month in which the board will see the cumulative total number of candy bars sold in Manila exceeded the cumulative total in Seoul is of:
3rd month.
<h3>What are linear functions?</h3>
The slope-intercept definition of a linear function is presented as follows:
y = mx + b.
In which the coefficients are defined as follows:
- m is the slope, representing the rate of change.
- b is the y-intercept, representing the initial value.
For the functions in this problem, the slope and the intercept are given as follows:
- Intercept: amount sold by the end of the first month.
Taking the end of the first month as a parameter, the functions are defined as follows:
- Seoul: S(m) = 40 + 60(m - 1).
- Manila: M(m) = 20 + 80(m - 1).
Then Manila exceeds Seoul when:
M(m) > S(m)
20 + 80m - 80 > 40 + 60m - 60
20m > 40
m > 2.
2.1 for example is in the 3rd month, hence the 3rd month is the correct answer.
More can be learned about linear functions at brainly.com/question/24808124
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