2. Transistors are of three types, type P, type Q, and type R. A grade A box of transistors contains 5 P's, 3Q's, and 1 R. A grade B box contains 2 P's, 3 Q's and 4 R’s. How many boxes
of each grade can be filled if the total numbers of P, Q, and R available are 80, 75, 70
respectively, and all transistors are used?
2) Grade A = 10 and Grade B= 15

Asays "we are both knaves" and b says nothing. exercises 24–31 relate to inhabitants of an island on which there are three kinds of people: knights who always tell the truth, knaves who always lie, and spies (called normals by smullyan [sm78]) who can either lie or tell the truth. you encounter three people, a, b, and c. you know one of these people is a knight, one is a knave, and one is a spy. each of the three people knows the type of person each of other two is. for each of these situations, if possible, determine whether there is a unique solution and determine who the knave, knight, and spy are. when there is no unique solution, list all possible solutions or state that there are no solutions. 24. a says "c is the knave," b says, "a is the knight," and c says "i am the spy."

Can some one me with these questions

Consider the following equation. 1/2x^3+x-7=-3sqrtx-1 approximate the solution to the equation using three iterations of successive approximation. use the graph below as a starting point. a. b. c. d.