Find the next number:
1, 11, 21, 1112, 3112, 211213

How many solutions does the nonlinear system of equations graphed below have?

In the diagram, gef and hef are congruent. what is the value of x

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?