At the beginning of the school year to number 13 is in the band was the same as the number of students in the quiet throughout the School here the number of students in the band decreased by eight and the number of students in the choir decreased by four at the end of the school year the numbers in it in the car with 25% more than the number of students in the van how many students who are in the van at the beginning of the school year

Find the solution of this system of equation -7x+y=-20 9x-3y=36

Bella want to know what the students at her school think of her show. which is the best group to survey to find this information a. go to the mall and ask all of the students she recognizes from school b. ask her viewers to call in durning an episode of the show c. get a list of students at her school from the office and use a random number generator to pick 30 of them d. get a list of students at her school from the office and pick the first 30 students on the list

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.