There are 20 random box lunches at a conference for teachers. They are all the same except 10 of the lunches have peanut butter cookies, 5 have snicker doodle cookies, and the last 5 boxes have chocolate chip. Knowing this a math teacher realizes that he has a 25% chance of randomly picking a box with a chocolate chip cookie. What type of probability did the teacher use?
A) Empirical probability
B) Authentic probability
C) Subjective probability
D) Theoretical probability

Use the following statements to write a compound statement for the conjunction or disjunction. then find its truth value. p: an isosceles triangle has two congruent sides. q: a right angle measures 90° r: four points are always coplanar. s: a decagon has 12 sides. a) a right angle measures 90° or an isosceles triangle has two congruent sides; true. b) a right angle measures 90° and an isosceles triangle has two congruent sides; true. c) a right angle measures 90° and an isosceles triangle does not have two congruent sides; false. d) a right angle measures 90° or an isosceles triangle does not have two congruent sides; true.