Em cada caixote cabem 30 duzias de laranja. Em um caminhão esta carregado com 80 caixotes de laranja quantas laranja no total o caminhão esta carregado

Idon't see any graph, however the graph of the function : f(x) = x²-2x+3 is a parabola: 1) open upward (since a> 0)2) it intersects y-axis in 3 (y=3)3) its axis of symmetry is x = +1 ( -b/2a)4) it's minimum is y = -2, so its vertex is (1,-2)5) it doesn't intersect the x-axis since discriminant < 0 

The additive identity is 0 because when you add 0 to a number, you get the identical number as an answer.a + 0 = a