Camilla borrows a book from the library for d days. The library charges a late fee of 0.10, dollars per day that the book is late. If Camilla returns the book more than 21 days after she borrowed it, the expression 0.10(d−21)represents the total late fee Camilla owes.

Kayla has a $500 budget for the school party. she paid $150 for the decorations. food will cost $5.50 per student. what inequality represents the number of students, s, that can attend the party?

James wants to promote his band on the internet. site a offers website hosting for $4.95 per month with a $49.95 startup fee. site b offers website hosting for $9.95 per month with no startup fee. for how many months would james need to keep the website for site a to be a better choice than site b?

Interpret the following expression (5y^2-7)^3/(2y)^2