It would take 8 months for Comporium to cost more than Brighthouse.
<h3>Linear equation</h3>
A linear equation is in the form:
y = mx + b
where y, x are variables, m is the rate of change and b is the initial value of y.
Let c represent the total cost to install Wi-Fi for m number of months.
For Comporium:
For Brighthouse:
For Comporium to cost more than Brighthouse:
39.99m + 100 > 49.99m + 20
10m > 80
m > 8
It would take 8 months for Comporium to cost more than Brighthouse.
Find out more on linear equation at: brainly.com/question/14323743