One pound is 16 ounces.
450 x 16 = 7200
7200 ounces.
A and D the rest of them is giving money away not saving it. Loaning it to a find is uncertain that they will give it back. Buying new bike is using money but it can save money is preticular if you are trying to save money I guess. Hiding it under a mattress is a good way to store money and save it for the furture. So the best choice that seem reasonable are A and D.
Answer:
first one has 1 solution, second one have infinity solutions, third one has no solutions and the last one has 1 solution
Step-by-step explanation: