Ivan needs to have a toilet repaired in his house. The cost of the new plumbing fixtures is $140 and the labor is $50/hr. Part: 0/2 Part 1 of 2 (a) Write a model that represents the cost of the repair C (in $) in terms of the number of hours of labor x. The model that represents the cost of repairs is C - 140 +50x Part: 1/2 Part 2 of 2 X (b) After how many hours of labor would the cost of the repair job equal the cost of a new toilet of $390? It would take hours of labor for the cost of the repair job to equal the cost of a new toilet. X