Students at Gray Middle School plan to run a total of 2,561 mi. So far, the sixth grade has run 242.5 mi, the seventh grade has run 285.5 mi, and the eighth grade has run 240.2 mi. How many more miles must the students run to reach their goal? Please Help Needed ASAP

[10 points, algebra 2-simplifying complex fractions]according to my answer key the restrictions are -1 and 4. but why not positive 1?

Arestaurant charges $100 to rent its banquet room for an event. it also charges $15 to serve dinner to each guest. write an equation for the total cost of the banquet room in terms of the number of guests. deine your variables. what is the total cost of the banquet room for 20 guests?

Someone answer asap for ! the total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?