The distance across a circle through it’s center is called the

Awork system has five stations that have process times of 5, 9, 4, 9, and 8. what is the throughput time of the system?

Ineed asap.i cant understand this question i need someone to me right away

With this question substitute t=3 and t=5 to determine if the two expressions are equivalent. 4(t + 3) 4t+12 which statements are true? check all that apply. a. the value of both expressions when t =5 is 32. b. the two expressions are not equivalent. c. the value of both expressions when t=3 is 15. d. the value of both expressions when t=5 is 23. e. the two expressions are equivalent. f. the value of both expressions when t=3 is 24.