Answer:
The cost of their monthly Internet service before the credit is $31.75
The required equation = [tex]3(x+5.50)=111.75[/tex]
Step-by-step explanation:
Let the monthly cost be x
Each month they received $5.50 as a credit on the bill.
The Schwartz family spent a total of $111.75 for Internet service for 3 months.
So, total cost of three moths = [tex]3(x+5.50)[/tex]
Since we are given that The Schwartz family spent a total of $111.75
So, [tex]3(x+5.50)=111.75[/tex]
[tex]x+5.50=\frac{111.75}{3}[/tex]
[tex]x+5.50=37.25[/tex]
[tex]x=37.25-5.50[/tex]
[tex]x=31.75[/tex]
Hence the cost of their monthly Internet service before the credit is $31.75
The required equation = [tex]3(x+5.50)=111.75[/tex]
