How many ways are there to choose a committee of 7 people from a group of 10 people? 720 120 840 5040

Which expression is equivalent to 2x^2+7x+4?

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?

We just started the introduction into circles and i have no idea how to do this.