I need help with this exercise please. What I need to know is the measure of one side of the square. Sorry for the language of the exercise

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?

For the sequence [tex]a_{n} = 2n/(n+1)[/tex], what is the value of [tex]a_{10}[/tex]

Use the zero product property to find the solutions to the equation (x+2)(x+3)=12