Which graph represents the compound inequality? –3 < n < 1

For a field trip to the zoo, 4 students rode in cars and the rest filled nine busess. how many students were in each bus if 472 students were on the trip

The holiday party will cost $160 if 8 people attend.if there are 40 people who attend the party, how much will the holiday party cost

X/y + 4y/x divided by x/y - 2y/x explain as in depth as you can how you simplfied the fractions. i don't know where to start on this : /