Lucia tried to solve the system below. Lucia’s Work

What error did Lucia make?
When Lucia solved the second equation for x, she subtracted 2y from both sides.
When Lucia solved for the value of y, she treated –2y as 2y.
When Lucia solved for the value of x, she added 18 to both sides.
When Lucia solved the second equation for x, she treated –2(–9) as 18 instead of –18.

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