Please help with (Solving Rational Equations and Inequalities)

What is the approximate total length of iron edging needed to create the square frame and the two diagonals?

14 pointslet x be the seats in the small van and y the seats in the large van. how many seats does the large van have? a company uses two vans to transport worker from a free parking lot to the workplace between 7: 00 and 9: 00a.m. one van has 9 more seats than the other. the smaller van makes two trips every morning while the larger one makes only one trip. the two vans can transport 69 people, maximum.how many seats does the larger van have?

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9