Answer:
The correct answer is A
Step-by-step explanation:
The number of goldfish increases by 5 every time the cost increases by $1.50, so the number of goldfish increases by 1 every time the cost increases by $0.30.
Use a proportion: 5/1.50 = 1/x
1.50(1) = 5x
1.50(1)/5 = 5x/5
0.30 = x
