PLEASE HELP so on ed genuity I can't hear the teachers bc of my MacBook fan which is really loud is there a way to turn the volume up on ed my MacBook sound is all the way up and I still can't hear

Solution:  Try using headphones or fixing your settings. Did you reset it?

step-by-step explanation:

for exempl this   system of equations   y = x - 3

                                                                y = 2x - 5

look   the line : y = x -3     ( red)

                            the line : y = 2x -5 ( bleus)

  answer:

  write 548 as 500 + 40 + 8. multiply each addend by 5. then add the three products to get 2,740.