What is this about because I’m confuse
Don't quite get the question
105 m = 2.5 h
x miles = 1 hour
You cross multiply since it's a proportion:
2.5 * x
105 * 1
=
2.5x = 105
Then you divide everything by 2.5
The answer is 42
The answer might be 5 times 7 that is 35
U=(x+2)
u^2+5u-6=0
C is answer