An aircraft has a maximum of 30 first class seats and 220 economy seats.

A first class seat costs $240 and an economy class seat costs $120.

A flight will be cancelled if the money taken for the seats is less than $28,800.

x=the number of first class seats

y=the number of economy class seats

Write three inequalities to represent the situation

(use < and >, ignore "or equal to" situations)

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?