The total cost, C, for running an advertisement in a local newspaper, The Free Press, is made up of an initial cost of $12 plus a charge of $5 per day. A rival newspaper, The Banner, is currently running a special on advertisements at $8 per day with no initial cost.

There is no clear question here, however, the plan for the local newspaper, if the plan is long-term, is more comfortable for the consumers, but less comfortable if it is short-term.

Using a sample size of two days.

- For the local newspaper, we have

($5 × 2) + ($12) = $22

- For the rivals, we have

$8 × 2 = $16

Using a sample size of one hundred days.

- For the local newspaper, we have

($5 × 100) + ($12) = $512

- For the rivals, we have

$8 × 100 = $800

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