Find the solutions (roots) of a quadratic equation using the graphing calculator. Consider the following examples: Solve: Since this equation is set equal to zero, the roots will be the locations where the graph crosses the x-axis (if the roots are real numbers). (Remember that the x-axis is really just y = 0.) 1. Set. 2. Use the ZERO command to find the roots -- 2nd TRACE (CALC), #2 zero.
The cost of glasses and how to save. Glasses can cost anywhere between $10 for reading glasses at Walmart to $500+ if you opt for an expensive designer pair. Asking how much glasses cost is a little like asking how much your wife should spend on a new dress. It depends on whether she's shopping at Kohl's or Neimen Marcus, Target or Anthropologie!
1 Prices vary tremendously, depending upon the type of frame, lenses and type of retailer. 2  Glasses can cost just $8 or up to $600 for those without insurance. 3  For name brands, prices can range between $50 and $1,000 or more. For name brands, prices can range between $50 and $1,000 or more. 2  At an eye doctor's clinic, prices for eyeglasses will vary depending upon the frames, lenses and region of the country.