Required:

$1.$ Assuming the estimated variable manufacturing overhead cost per unit is $\backslash (\backslash$$ $0\mathrm{.}60\backslash ),$ what must be the estimated total fixed manufacturing overhead cost per quarter?

$2.$ Assuming the assumptions about cost behavior from the first three quarters hold constant, what is the estimated unit product cost for the fourth quarter?

$3.$ What is causing the estimated unit product cost to fluctuate from one quarter to the next?

$4.$ Assuming the company computes one predetermined overhead rate for the year rather than computing quarterly overhead rates, calculate the unit product cost for all units produced during the year.