The customer can pay
1 time anually: $1127.58
12 payments of $98.99
To determine how much he will pay if the chooses the monthly plan, multiply the monthly fee by 12
[tex]98.99\cdot12=1187.88[/tex]If he chooses the monthly plan he will pay $1187.88 in a year.
Subtract both fees to determine how much he'll save if the chooses to pay the full amount:
[tex]1187.88-1121.58=60.3[/tex]He will save $60.3