Please label answers. pictures are the same, just drop down list is showing for each question. thanks

Trucks arrive at the loading dock of a wholesale grocer at the rate of 1.2 per hour. A single crew consisting of two workers can load a truck in about 30 minutes. Crew members receive $10 per hour in wages and fringe benefits, and trucks and drivers reflect an hourly cost of $69. The manager is thinking of adding another member to the crew. The service rate would then be 2.4 trucks per hour. Assume rates are Poisson.. Use Table 1 and Table 2. a. Would the third crew member be economical? (Round your intermediate and final answer to 2 decimal places. Omit the "$" sign in your response.) (Click to select) because, the total cost is $ b. Would a fourth member be justifiable if the resulting service capacity were 3 trucks per hour? (Round your intermediate and final answer to 2 decimal places. Omit the "$" sign in your response.) because, the total cost is $ (Click to select) No Yes Saved Help Save Trucks arrive at the loading dock of a wholesale grocer at the rate of 12 per hour A single crew consisting of two workers can load a truck in about 30 minutes. Crew members receive $10 per hour in wages and fringe benefits, and trucks and drivers reflect an hourly cost of $69 The manager is thinking of adding another member to the crew. The service rate would then be 2.4 trucks per hour. Assume rates are Poisson. Use Table 1 and Table 2 a. Would the third crew member be economical? (Round your intermediate and final answer to 2 decimal places. Omit the "S" sign in your response.) (Click to select) because, the total cost is $ No Yes Jember be justifiable if the resulting service capacity were 3 trucks per hour? (Round your intermediate and final answer to 2 decimal places. Omit the "S" sign in your response.) (Click to select) because, the total cost is $