To find the number of working computers in a school with 2 computer labs, each with 30 computers, subtract the number of non-working computers from the total. The correct expression is 2 * 30 - 6.
The question is about determining the number of working computers in a school with 2 computer labs, each containing 30 computers, with a total of 6 computers being out of order. To find the number of working computers, you subtract the number of broken computers from the total number of computers. The appropriate expression to use is 2 * 30 - 6.
Each lab has 30 computers, so the total number of computers is 2 * 30. However, a total of 6 computers are not operational, so those need to be subtracted from the total. Thus, the expression is 2 * 30 (the total number of computers) minus 6 (the number of non-working computers), which equals 60 - 6. So, the correct expression to find the number of working computers is 2 * 30 - 6.