3x +y = -5
2x + 3y = -8

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)

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?

Will give a: 122 b: 90 c: 48 d: 180