Consider the following. Slack Slack is a downloadable app that can be used to automatically generate excuses for being late to work based on the weather, traffic conditions, and the employer's line of business. One week after its release, 6,060 copies of Slick Slack were downloaded. After 5 weeks, 13,150 copies had been downloaded. Let x represent the number of weeks since Slick Slack was released, and y represents the number of copies that had been downloaded.

Compute the marginal change b.

b =------------ downloads per week