After 1 day, 300 copies of a book are sold. Each of the following days, 20 more copies are sold.
Use an equation in point-slope form to model the sales of the
book and determine how many copies will be sold after 15 days.

Aprobability experiment is conducted in which the sample space of the experiment is s={7,8,9,10,11,12,13,14,15,16,17,18}, event f={7,8,9,10,11,12}, and event g={11,12,13,14}. assume that each outcome is equally likely. list the outcomes in f or g. find p(f or g) by counting the number of outcomes in f or g. determine p(f or g) using the general addition rule.