Points possible: 1, points correct: 0 given the equation y = x + 9, what is the y -intercept?

Ateacher wanted to buy a chair, a bookshelf, two tables and a desk. she spent $900 for all five items and the chair and the desk combined 70% of her total. if the bookshelf cost $50, how much did each of the tables cost?

Given the diagram below, michael writes, "segment ac is congruent to segment ac." which of the following reasons allow him to write this statement?

Me i’m stuck on all these questions besides the two bottom ones