If it cost $60 for 10 students to go on field trip and $70 for 20 student to go on field trip and it cost$80 for 30. how much would it cost for 40 students and 50 students to go on a field trip.

Scenario: a rectangular plot of ground is 5 meters longer than it is wide. its area is 20,000 square meters. question: what equation will you find the dimensions? note: let w represent the width. options: w(w+5)=20,000 w^2=20,000+5 (w(w+5))/2=20,000 w+2(w+5)=20,000