Janet is buying a $28 necklace. the store reduces the price by 20% and then applies a $2 coupon. how much will janet pay for the necklace? could yoy show your work? i greatly appreciate it.

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

In a column proof the right column states your reasons

The price of a dozen eggs was $1.63. suppose the price increases m dollars per dozen and then the price decreases $0.12 per dozen. which expression represents the current price of eggs after the two price changes?