Answer:
-1.75
Step-by-step explanation:
This should be it, but you didn't provide options although you put "Which of the following.."
4-4x=12+16x
−4x+4=16x+12
−4+4−4=16+12−4
-4x=16x+8
-4x-16x=16x+8-16x
-20x=8
-20x/-20 = 8/-20
x= -2/5
b
Answer: 494 mph
S=d/t
