Show that in using the two-phase simplex method, whenever an artificial variable becomes nonbasic, we can remove it from the current simplex tableau (i. e., delete the corresponding column in the simplex tableau, and continue the simplex method on the reduced simplex tableau), and still obtain the same conclusion at the end of Phase 1 as if we keep this artificial variable until the end of Phase 1.

At a kentucky friend chicken, a survey showed 2/3 of all people preferred skinless chicken over the regular chicken. if 2,400 people responded to the survey, how many people preferred regular chicken?

I'm confused on this could anyone me and show me what i need to do to solve it.

Barbara has a good credit history and is able to purchase a car with a low-interest car loan. she co-signs a car loan for her friend jen, who has poor credit history. then, jen defaults on the loan. who will be held legally responsible by the finance company and why? select the best answer from the choices provided. a. barbara will be held legally responsible because she has a good credit history. b. jen will be held legally responsible because she drives the car. c. barbara will be held legally responsible because she is the co-signer. d. jen will be held legally responsible because she has a poor credit history. the answer is a