Estimate an 18% tip for a $30.80 meal

$35.42 hope i'm right, and hope this helps :)

30.80 * (18%) = 5.544
30.80 + 5.544 = 36.344
Your Answer is "36.344"

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