I would don't really have the answer to this question maybe try rewording it
Answer:
1.51
Step-by-step explanation:
Divide 7.55 by 5 and it equals 1.51
The answer is -21/3, -1.4, 21%, 4/5,0.75.
You have to convert them to the same unit.
Answer:
b = c - a - D
Step-by-step explanation:

To get the constant of proportionality (unit rate) you must find the miles driven in 1 hour. To get this you simply divide 200 by 4...
200÷4=50
So, the constant of proportionality is 50 mph.