Question 13 please.

13) Determine the truth value of each of these statements if the domain of each variable consists of all real numbers. a) 3x(x2 = 2) b) 3x(x =-1) c) Vx(x + 2 > 1) d) Vx(x+x) 14) A stamp collector wants to include in her collection exactly one stamp from each country of Africa. If I(s) means that she has stamp s in her collection, F(s, c) means that stamp s was issued by country c, the domain for s is all stamps, and the domain for c is all countries of Africa, express the statement that her collection satisfies her requirement. Do not use the 3! symbol. 15) Let P(m, n) be n is greater than or equal to m where the domain is the set of nonnegative integers. What are the truth values of 3n Em P(m, n) and Em En P(m, n)? 16) Translate these specifications into English where F (p) is Printer p is out of service, B(p) is Printer p is busy, L(j) is Print job j is lost, and Q(j) is Print job j is queued. a) 3p(F(p)AB(p))-3jL() (VpB(p)A VjQG)3jL(j)