A taxi cab charges $1.75 for the flat fee and $0.25 for each mile. Write an in equality to determine how many miles Eddie can travel if he has $15 to spend.

a.$1.75 + $0.25x ≤ $15
b.$1.75 + $0.25x ≥ $15
c.$0.25 + $1.75x ≤ $15
d. $0.25 + $1.75x ≥ $15