Hi. I need help with these questions (see image) Please show workings.
Answer (c) ,(d) and (e)

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 of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?

4percent of a number is what fraction of that number? ? i really need asap