At a county fair, guests have the option of buying individual tickets for rides at $5 per ride or donating $15 to charity and then paying only $2.50 per ride. How many tickets for rides would a guest have to buy to make the charity donation option the better deal? How would you write this as an equation? Please help

Which of those sequences is a geometric sequence

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?