Warp Manufacturing Corporation uses a standard cost system to collect costs related to the production of its ski lift chairs. Warp uses machine hours as an overhead base. The variable overhead standards for each chair are 1.2 machine hours at a standard cost of $18 per hour. During the month of September, Warp incurred 34,000 machine hours in the production of 32,000 ski lift chairs. The total variable overhead cost was $649,400. What is Warp's variable overhead spending variance for the month of September? a. $37,400 unfavorable
b. $41,800 favorable
c. $79,200 Favorable
d. $84,040 favorable

Carlton industries is considering a new project that they plan to price at $74.00 per unit. the variable costs are estimated at $39.22 per unit and total fixed costs are estimated at $12,085. the initial investment required is $8,000 and the project has an estimated life of 4 years. the firm requires a return of 8 percent. ignore the effect of taxes. what is the degree of operating leverage at the financial break-even level of output?

Aproduction line has three machines a, b, and c, with reliabilities of .96, .86, and .85, respectively. the machines are arranged so that if one breaks down, the others must shut down. engineers are weighing two alternative designs for increasing the line’s reliability. plan 1 involves adding an identical backup line, and plan 2 involves providing a backup for each machine. in either case, three machines (a, b, and c) would be used with reliabilities equal to the original three. a. compute overall system reliability under plan 1. (round your intermediate calculations and final answer to 4 decimal places.) reliability b. compute overall system reliability under plan 2. (round your intermediate calculations and final answer to 4 decimal places.) reliability c. which plan will provide the higher reliability? plan2plan1

The answer here, x=7, is not in the interval that you selected in the previous part. what is wrong with the work shown above?