at a blood drive 8 donors with type o+ blood, 6 donors with a+ blood, and 3 donors with type b+ blood are in line. In how many distinguishable ways can the donors be on line?

Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees

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