Which pair of triangles must be similar? Group of answer choices

Triangles 1 and 2 each have a 350 angle.

Triangles 3 and 4 are both isosceles. They each have a 400 angle.

Triangle 5 has a 300 angle and a 900 angle. Triangle 6 has a 300 angle and a 700 angle.

Triangle 7 has a 500 angle and a 250 angle. Triangle 8 has a 500 angle and a 1050 angle.

i would you but i don't under stand the qustion

step-by-step explanation:

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

b. b < 1 might be the correct answer