Mildred has two children, Aaron and Irving, who are qualifying persons for the Child and Dependent Care Credit. Aaron has $4,000 in dependent care expenses, and Irving has none. All other tests are met. Mildred's credit is based on of expenses. A) $2,000 B)$3,000 C)$4,000 D)$6,000

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