Mary ann is buying miniature cars. she wants to buy 20 cars total for a big race she and her friends are having. black cars $6 dollars each. if she spends $104, how many white cars did she buy?

What is the value of m in the equation 1/2 m - 3/4n=16 when n=8

Which graph represents the linear function below? y-3=1/2(x+2)

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?