Car A and Car B are stopped at a red light on a hill. Car A drives 137 ft downhill. Car B drives 172 ft uphill. Represent these situations as signed numbers.

Which expression gives the area of the triangle shown below

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?

Jeremy wants to determine the number of solutions for the equation below without actually solving the equation. which method should jeremy use?