Wendy is paid $9 per hour and plans to work between 20 and 25 hours per week. identify the independent and dependent quantity in the situation. find reasonable domain and range values.
a: weekly pay; hours worked; 20 to 25 hours; $180 to $225
b: hours worked; weekly pay; 20 to 25 hours; $9 to $225
c: hours worked; weekly pay; 20 to 25 hours; $180 to $225
d: weekly pay; hours worked; $180 to $225; 20 to 25 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."

Abird on top of a 200 ft bridge tower sees a man standing on the lower part of the bridge (which is 50 ft above the ground). the angle of depression from the bird is 26 ̊. how far is the man from the base of the bridge tower? with explanation and pictures .

Solve each quadratic equation by factoring and using the zero product property. x^2 - 8x + 30 = 3x