#1 B
#2 D
#3 A
See attached photo for step by step solutions :)
Answer:
G. 
Step-by-step explanation:
Given that figure I and figure II are similar, it follows that the ratio of their corresponding side lengths are equal and the same.
Thus:

Therefore, the proportion that must be true is:
✔️
Answer:
4 hours
Step-by-step explanation:
42x?=168
?=4
8x - 6 - 12x^2 + 9x
2(4x-3)-3x(3x-3)
=> (2-3x)(3x-3)
=> 3(x-1)(2-3x)