Which graph best describes the slope of the line in the graph? a) positive
b) negative
c) zero
d) undefined

Which of the following parabolas opens down?

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?

Determine if the outside temperature is a function of the time of day or if the time of day is a function of temperature and explain why or why not.