need help with these question will be in screen shots

A wholesale club offers two types of memberships. The Executive Membership is $90 per year, including an annual 5% reward. The Business Membership is $80 per year without a reward. The total cost for membership,y, depends on the amount of money spent on merchandise, x, and can be represented by the following equations: Executive Membership: y : 90*0.05x Business Membership: y : 80 Cost of Membership vs. Amount Spent 120 100 m Executive Membership Business Membership 50 40 20 Cost of Membership ($) Amount Spent ($) According to the graph, how much money spent on merchandise would result in the same cost for each membership? The same cost occurs when 3D of merchandise is purchased. X 8 Eight students in Ms. Reese's class decided to purchase their textbook from two different sources. Some of the students purchased the textbook from the college bookstore for S 14.50. The rest of the students purchased the textbook from an online discount store for $14.00 per book. If the total amount spent by the eight students is $114.50, how many students purchased the book online? [:] students purchased the book online