$8\mathrm{.}1$ Consider the following $2015$ data for Newark General Hospital $($in millions of dollars$)$: Static Budget Revenues Costs Profits $$4\mathrm{.}74\mathrm{.}10\mathrm{.}6$ Flexible Budget $$4\mathrm{.}84\mathrm{.}10\mathrm{.}7$ Actual Results $$4\mathrm{.}54\mathrm{.}20\mathrm{.}3$a$.$ Calculate and interpret the profit variance. b$.$ Calculate and interpret the revenue variance. c$.$ Calculate and interpret the cost variance. d$.$ Calculate and interpret the volume and price variances on the revenue side. e$.$ Calculate and interpret the volume and management variances on the cost side. f$.$ How are the variances calculated above related?