Sarah has a certain amount of money budgeted for tea and snacks during the work week, and she always aims to spend her entire budget. If she spends her entire budget on tea, she can afford 40 cups of tea. If she spends her entire budget on snacks, she can afford 8 snacks. What is the opportunity cost of a snack?

5 cups of tea

Explanation:

Opportunity cost is what an individual, firm or government forgoes in order to get something else. For example, an individual might have $2. A pen costs $2 likewise a notebook. If the person decides to buy the pen, the opportunity cost is the notebook which he or she did not buy.

With the money Sarah has, spending her entire budget will give her 40 cups of tea or 8 snacks. This implies that for 1 snack, the opportunity cost is (40/8) = 5 cups of tea

the first successful, urban blues recording, selling more than 75,000 copies, was made in year 1920.

mamie smith recorded the first commercially successful example of the urban blues,   with the recording of “crazy blues”."crazy blues" was recorded on august 10, 1920, in new york city. within a month of the release of “crazy blues” it had sold 75,000 copies.