What does a positive correlation tell you about the graph that compares advertising costs and sales. Would the owners of the company be happier if the slope was steeper or flatter? Explain.

The sum of the speeds of two trains is 720.2 mph. if the speed of the first train is 7.8 mph faster than the second train, find the speeds of each.

My hour hand points between the 8 and the 9 in 35 minutes it will be the next hour. what time is it ?

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?