Question 183758
Using the equation 30t+20=c, you are able to plug in 8 months in for "t" and solve the equation. That will give you $260 for 8 months of service. Using the same equation you are able to plus in $90 for "c" and then solve the equation for "t" which will tell you how many months the service will be provided. This will come about to be D. 2 and 1/3 months.