The table shows the mass and density of some substances. density of substances mass (g) density of iron (g/cm3) density of silver (g/cm3) 100 7.8 q 200 p 19.3 part 1: is the value of q less than, greater than, or equal to the value of p? part 2: explain your answer for part 1.

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?