Variances Question. Pretty much opportunity cost word problems. I know it is very simple I'm just unsure about which direction to take it from. i need an answer ASAP. Before 3pm EST

Question 1: O'Brien Vineyards has the following direct labor standard to bottle, cork and label one bottle of Pinot Noir; 0.33 standard hours per bottle at $11.25 per direct labor hour Last week, 777 direct labor hours were worked at a total labor cost of $8,787 to bottle, cork and label 2,125 bottles. What are O'Brien Vineyards labor efficiency variance and the labor rate variance? Is the variances favorable or unfavorable? What are 2 possible reasons for the variances? Question 2: O'Brien Vineyards reports the following; Net Operating Income: 205,000 Average Operating Assets: 1,985,000 Sales: 2,575,000 Operating Expenses: 2,320,000 Minimum Required Rate of Return is 12.25% O'Brien Vineyard's ROI is 10.3% Residual Income is -38,162.50 If O'Brien's Vineyard is compensated based on ROI, will he want to make an investment of $400,000 that would generate additional net operating income of $75,000 per year? Why or why not. Show calculations. If O'Brien's vineyard is compensated based on residual income, will he want to make an investment of $400,000 that would generate additional net operating income of $75,000 per year? Why or why not. Show calculations. Question 3. O'Brien Vineyards has the following direct materials standard to manufacture one bottle of Pinot Noir: 2.4 pounds of grapes per bottle at $1.65 per pound Last week, 5,415 pounds of grapes were purchased and used to make 2,125 bottles. The grapes cost a total of $9,043.05. What is O'Brien Vineyards materials quantity variance and the materials price variance? Is the variances favorable or unfavorable? What are 2 possible reasons for the variances