SOLUTION: when x number of units are sold,the price of each unit (in dollars) is given by p = -x over 2 + 75. find the unit price when the following qualnties are sold 2 ,7,9, 11

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When 'x' units are sold, the price of each unit (p in $) is given by

or

So when 2 units are sold, unit price i.e. price of each unit is $ = $75.25.

So when 7 units are sold, unit price i.e. price of each unit is $ = $75.01 (approx).

Try the others as above. The answers are $75 (approx) in both the case.