The point (–3, –5) is on the graph of a function. Which equation must be true regarding the function? f(–3) = –5
f(–3, –5) = –8
f(–5) = –3
f(–5, –3) = –2

you need to add a picture

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