5. An app developer projects that he will earn
$230.00 for every 100 apps downloaded.
Which of the following equations can be used
to represent the proportional relationship
between the number of apps, x, and the total
earnings, y.
A. y = 100x + 230
B. y = 230x + 100
C. X = 2.30y
D. y = 2.30x

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?