How do you find impressions from given cost and CPC?

To determine the number of impressions from the given cost and cost-per-click (CPC), you use the formula where the total cost is divided by the CPC. This calculation reflects how many clicks you can buy with the budget allotted, and since impressions are directly related to the clicks generated, this formula correctly derives the number of impressions.

For example, if you spent a total of $100 and your CPC is $1, dividing the cost by the CPC (100/1) results in 100 clicks. Typically, in digital marketing, the relationship between clicks and impressions can vary based on the specific campaign; however, the formula directly depicts how cost translates to impressions through clicks.

The other options do not represent the correct method for calculating impressions derived from cost and CPC, as they introduce unnecessary factors or incorrect operations, thus failing to accurately convey the relationship.