Oakman Accounting Partners is a small tax and accounting services firm. Each billable hour of partner time has a $960 budgeted price and $450 budgeted variable cost. Each billable hour of staff time has a budgeted price of $250 and a budgeted variable cost of $150. For the most recent year, the partnership budget called for 7,500 billable partner-hours and 30,000 staff-hours. Actual results were as follows Required: a. Compute the sales price variance b. Compute the total sales octivity variance. c. Compute the total sales mix voriance. d. Compute the total sales quantify variance Note: For all requirements, do not round intermediate calculations. Indicate the effect of each variance by selecting "F" for favoroble, or "U" for unfavorable. If there is no effect, do not select either option