Heather is at the grand opening celebration of a supermarket. She spins a wheel with 10 equal-sized slices, as shown below. The wheel has 8 black slices, 1 grey slice, and 1 white slice. When the wheel is spun, the arrow stops on a slice at random. If the arrow stops on the border of two slices, the wheel is spun again. (a) If the arrow stops on a grey slice, then Heather wins a gift card. Find the odds in favor of Heather winning a gift card. O:0 O to O (b) If the arrow stops on a grey slice, then Heather wins a gift card. Find the odds against Heather winning a gift card.

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