Final answer:
By adding the given amounts for the constant usage plan, the total paid would be $87.93. Adding these together, we get $87.93 as the total amount paid on the constant usage plan.
Step-by-step explanation:
The student is asking about the total cost paid on a constant usage plan.
To calculate this, we sum the given amounts: $21.83, $22.08, $21.65, and $22.37.
Adding these together, we get $87.93 as the total amount paid on the constant usage plan.