3x+2y+2z = -2
2x+y-z = -2
x-3y+z = 0

Here you go, I really hope this helps

If you can, it would be appreciated if you can mark this as Brainliest. I'm trying to rank up

change of stock price/initial stock price on friday * total stock value = change of stock value

0.89/73.73 *x = 42.72

x=3539.04 = total stock value at initial stock price on friday .

total stock value at initial stock price on friday/ initial stock price on friday = number of shares

3539.04/73.73 = 48 shares

they own 48 shares of this stock