Which of these expressions entered into a graphing calculator will return the probability of success on the 12th event of a geometric experiment when the
probability of success during a single event is 0.24?
A. geometpdf(12, 0.24)
B. geometcdf(12, 0.24)
C. geometcdf(0.24, 12)
D. geometpdf(0.24, 12)

Statements reasons 1. ab ? cd; ad ? bc 1. given 2. ac ? ac 2. reflexive property 3. ? adc ? ? cba 3. ? 4. ? dac ? ? bca; ? acd ? ? cab 4. cpctc 5. ? dac and ? bca are alt. int. ? s; ? acd and ? cab are alt. int. ? s 5. definition of alternate interior angles 6. ab ? cd; ad ? bc 6. converse of the alternate interior angles theorem 7. abcd is a parallelogram 7. definition of parallelogram what is the missing reason in step 3?