Answer:
r ≥ 8.00 - 0.45 d
Step-by-step explanation:
Let the amount remaining in Walter's wallet be "r".
and let he is traveling "d" days in a week.
It is given that Walter has $8.00 in his wallet in the starting.
Also, he is spending $0.45 as the fare of bus daily.
So, the equation best describe this condition is: r ≥ 8.00 - 0.45 d