If university printers outsources the personnel department functions, what is the maximum they can pay an outside vendor without increasing total costs

$27,600

Explanation:

The maximum amount that the university should pay must be equal to the variable costs of the personnel department. The department's total costs are $35,500 and the variable costs are $22,000 and the avoidable fixed costs are $5,600, so as long as the university pays up to $27,600 (= $22,000 + $5,600) to the outside vendor, then it will not have increased its total costs.

The fixed non-avoidable costs = $35,500 - $22,000 - $5,600 = $7,900 will remain regardless of what decision is made. If the university pays more than the variable costs and avoidable fixed costs, e.g. $28,000, then total costs would be $36,900 which results in a $400 increase.

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.

i might look it up later.