You have figured out the marginal cost and the marginal benefit of buying an extra smoothie. in 2-3 sentences, describe how you would use these measurements to make a decision that leaves you better off.

I think I must first get the marginal cost of the product before i bought if it is worth it to its value, Then i would compute for the marginal benefit to know what would i gain in this product. Lastly I would compare both the marginal cost and marginal percentage if the cost is lower than the benefit then the product is worth it to buy.

Wrigley juicy fruit

They can use the north star to estimate their location in the ocean.