For which system of equations would you need to estimate the solution?

Find the slope of a line given the following two points

An internet company charges $8.95 per month for the first 3 months that it hosts your web site. then the company charges $11.95 per month for web hosting. how much money, in dollars, will the company charge for 8 months of web hosting?

Alex's monthly take home pay is $2,500. what is the maximum bad debt payment he can maintain without being in credit overload?