The unit contribution margin is calculated as the difference between: a. selling price per unit and fixed cost per unit.
b. selling price per unit and variable cost per unit.
c. selling price per unit and product cost per unit.
d. fixed cost per unit and variable cost per unit.
e. fixed cost per unit and product cost per unit.

Alarge tank is filled to capacity with 500 gallons of pure water. brine containing 2 pounds of salt per gallon is pumped into the tank at a rate of 5 gal/min. the well-mixed solution is pumped out at the same rate. find the number a(t) of pounds of salt in the tank at time t.

What part of the rational model of decision-making does the former business executive “elliott” have a problem completing?

In 2017, "a public university was awarded a federal reimbursement grant" of $18 million to carry out research. of this, $12 million was intended to cover direct costs and $6 million to cover overhead. in a particular year, the university incurred $4 million in allowable direct costs and received $3.4 million from the federal government. it expected to incur the remaining costs and collect the remaining balance in 2018. for 2017 it should recognize revenues from the grant of