Answer:
35
Step-by-step explanation:
0.25 x 140 = 35
The answer is B. 829 feet per second.
x=(8/3, infinity)
-3x+8<15-3x+8
-3x+8<-3x+23
8<23
15-3x+8<15
23-3x<15
-3x<-8
x>8/3
Therefore, x=(8/3, infinity)