4 plans to sill single-user access to the beek for s49: Through a senes of web-based experiments, Eastman has created a predictive model that estimates demand as o function of pike. the predictive medel is demund =4,000=6p, where a is the price of the e-book. if fastinan sells the singe-uter actess to the elicerenic book at a price of 1 it wit earn a mairtum prote of 1