William recorded data to determine the relationship between the time usage, x, and the percentage of charge left on his mobile phone, y. he graphed the data and drew the line of best fit. the equation of the line of best fit is y = -10x + 100. about how many hours will it take for the phone lose its charge completely? about 5 hours about 10 hours about 20 hours about 22 hours about 24 hours

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 any one me with the answers to these questions asap?

What statement is true? 2x^2-9x+2=-1