Joseph is selling cellphone data plans. He plans to charge $55 per month for unlimited data, as well as a one-time startup fee of $21. Fill in the expression with the correct numbers to represent the given scenario. Let m represent the number of months.

Question

____m+_____
The total cost for 6 months is $_____

Answer 1

To represent the total cost for Joseph's cellphone data plan as a function of months (m), the expression can be written as:

\[ 55m + 21 \]

In this expression:

• \(55m\) represents the monthly charge of $55 for \(m\) months.
• \(21\) represents the one-time startup fee.

To find the total cost for 6 months, we can substitute \(m = 6\) into the expression:

\[ 55(6) + 21 = 330 + 21 = 351 \]

Therefore, the total cost for 6 months is $351.

To summarize:

• The completed expression is: 55m + 21
• The total cost for 6 months is: $351.