Which angles are alternate interior angles?

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

Fanny mendelssohn manages all the magazines and paperback books at a local grocery store. she prices many paperbacks to sell at $7.99. the cost to the store is $5.29. what is the markup rate on a paperback book, based on its cost?

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36