Raj wrote the four equations that are shown below. A 3(x+4)=3(x+2)+6 B 6(x-1)=3(x-1)+3 C 5x+4-x=2(2x-2) D -2(x+3)+x=-x-6 He examined them, without solving them, to determine which has no solution. Which of Raj’s equations has no solution?

Exercise: counting committees 0.0/2.0 puntos (calificable) we start with a pool of n people. a chaired committee consists of k≥1 members, out of whom one member is designated as the chairperson. the expression k(nk) can be interpreted as the number of possible chaired committees with k members. this is because we have (nk) choices for the k members, and once the members are chosen, there are then k choices for the chairperson. thus, c=∑k=1nk(nk) is the total number of possible chaired committees of any size. find the value of c (as a function of n ) by thinking about a different way of forming a chaired committee: first choose the chairperson, then choose the other members of the committee. the answer is of the form c=(α+nβ)2γn+δ. what are the values of α , β , γ , and δ ?