Ans: Before anything else Erica first needs to compute the unadjusted use-case points (UUCP). UUCP is simply the sum of the UAW and the UUCW. In other words the UUCP equation is UUCP = UAW + UUCW. The values for UAW and UUCW are provided above. Plugging these values into the UUCP equation and computing, we find that the system has 82 unadjusted use-case points (UUCP).Next Erica needs to compute the adjusted use-case points (UCP). UCP is the product of UUCP, the technical complexity factor (TCF), and the environmental factor (EF). In other words the UCP equation is UCP = UUCP*TCF*EF.Erica has just computed the UUCP value. Unfortunately, she does not yet know the TCF and EF values. There are formulas for each:TCF = 0.6 + (0.01*Tfactor)EF = 1.4 + (-0.03*Efactor)Since the Tfactor and Efactor values are provided, Erica can plug these into these formulas and find that TCF = 0.75 EF = 0.635Then plugging these values into the UCP equation and computing we find that the system has a value of 33.3375 adjusted use-case points (UCP)Now that Erica knows the UCP, she can compute the number of person-hours. The equation states that this is simply the product of the UCP and person-hours multiplier (PHM). In other words the conversion formula is Effort = PHM*UCP.We can now answer parts (a) and (b)a. Normally, when there are two or less environmental factors working against the timely delivery of the project, the PHM is taken to be 20 person-hours per adjusted use-case point. However, Erica has three strikes against her and must use a PHM value of 28: Effort = 33.3375*28 = 666.75 person-hours(since this is only an estimate, it makes sense to round this number to 670)b. Yes. Rethink it Erica. The rule of thumb is that if you have five or more environmental factors working against you, you need to rethink whether to take on the project. Here you have five. Maybe hire the part-timers to work full time, or get part-timers with more experience, or limit the scope of the project so the requirements are more stable. Without some adjustments, this project is too risky. You might never complete it.Response: See pages 182-187