Using diagonals from a common vertex, how many triangles could be formed from an 18-gon?

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?

One integer is 8 times another. if the product is 72, then find the integers

Find the value of x for which line a is parallel to line b