If a friend is struggling with factoring. Explain the process to factor 3xsquare-5x-12

Factor 3x2−5x−12

3x2−5x−12

=(3x+4)(x−3)

(3x+4)(x−3)

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

since no one answered yet i will give it a shot, not completely sure tho.

i think it should be y=cos(x+2pi), (third answer, answer c)

good luck.