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URGENT: ITS DUE TODAY!!!

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

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?

Write a function rule for  “the output is  5 less than the input.” let  x be the input and let  y  be the output.