Help with English pls pls pls

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?

Which strategy is used by public health to reduce the incidence of food poisoning?

Find the center of the circle that can be circumscribed about efg with e(4,4) f(4,2) g(8,2)