Cost to store: ? markup: 80% selling price$122.40 what is the starting cost?

Twenty-five percent of the customers entering a grocery store between 5 p.m. and 7 p.m. use an express checkout. consider five randomly selected customers, and let x denote the number among the five who use the express checkout.

Rectangle pqrs has length a and width 4b. the x-axis bisects ps and qr what are the coordinates of the vertices

65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?