What are the earnings for:

1. 5 days at $69.00 a day = $
a0

2. 3.5 days at $27.75 a day = $
a1

Add 1/7 + -1/7 your answer should be reduced to its smallest form and should not be an improper fraction

An airplane travels at an unknown elevation before it descends 3 miles to an elevation of 15 miles. find the elevation of the plane before its descen.

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?