D. 30 m2
4. Mandy can buy 4 containers of yogurt and 3 boxes of crackers for $9.55. She can buy 2
containers of yogurt and 2 boxes of crackers for $5.90. How much does one box of crackers
cost?
a. $1.75
b. $2.00
c. $2.25
d. $2.50

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."

What is the x-intercept and y-intercept of the equation 2x+1. 2o

20 solve 2(4 x + 3) < 5 x + 21. a) { x | x < 9} b) { x | x > -5} c) { x | x > -9} d) { x | x < 5}