Solve by completing the square and hunt for twice the larger root. x^2-9x+3=0

At a sale this week, a desk is being sold for $213. this is a 29% discount from the original price. what is the original price?

Erinn wrote the equation –5x + 4y = 32 to represent her hourly wage (y) and how this wage has changed during each year that she worked at a company (x). what is the rate of change in erinn's hourly wage per year?

Given that y varies directly to the square root of (x + 1), and that y = 1 when x = 8,(a)express y in terms of .x,(b)find the value of y when x = 3,(c)find the value of x when y = 5.