Can you tell me eve answer for one you get 30 points

What is the equation of this graphed line? enter your answer in slope-intercept form in the box.

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2

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?