Bryn invested $2700 into an account that grows at a 4% annual interest rate. If she made no additional deposits of withdrawals on the account, which of the following equations could be used to find the amount of money in Bryn's account after 7 years?

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?