Zach purchased a stock. The value of the stock has been falling and rising as described by the
polynomial function () = 2x3 - 90r - 350, where x is the number of weeks since the stock was
purchased. What does the y-intercept of this function represent?

Can someone me out here and the tell me the greatest common factor

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?

What is the value of the product (3-2i)(3+2i)?