The area of a rectangle is expressed as (12m + 18) square feet. if the width of the rectangle is 6 feet, choose an expression to represent the length of the rectangle. a. 6(12m + 18) feet b. (m + 1) feet c. (2m + 3) feet d. (6m + 12) feet

Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?

With alll of except for the 2 that i did already

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?