Cristobal is comparing the membership club fees at two different bookstores. at the first bookstore, it costs $20.14 annually to be a member of the club, but he will save 15% on all his purchases. at the second bookstore, it costs $32.35 annually to be a member of the club, but he will save 25% on all his purchases.

In a certain pentagon, the interior angles are a,b,c,d,e where a,b,c,d,e are integers strictly less than 180. ("strictly less than 180" means they are "less than and not equal to" 180.) if the median of the interior angles is 61 and there is only one mode, then what are the degree measures of all five angles?

He ! a group of farmers planned to clean 80 acres of wheat per day to finish the work on schedule. right before the work started, they received a new piece of machinery that them clean 10 more acres per day than originally planned. as a result of increased productivity in the last day before the deadline they only had to clean 30 acres. how many acres of wheat did the group of farmers have to clean?

What is r i 4.5+10r=-6.5 with work pls