Answer:
a) c = 25 - 5d
Step-by-step explanation:
A is the correct answer because the amount of money he currently has is being reduced as the number of days increases.
B is incorrect because you are subtracting the amount of money he originally has.
C is incorrect because the amount of money he spends on yogurt would decrease the amount of money he has and should be subtracted rather than added.
D is incorrect because it fails to account for the money Randel initially has.
