Well, a y-intercept is a the point on a graph where the x value equals 0, because the point sits exactly on the y-axis. In this case, the y-intercept would be (0, -9).
I think the answer is 42.
Degree of ploynominal is the largest exponent you find, which is here the 4x to the 6th. there are only two terms here.
5.28 / 12 = 0.44 per oz
7.96 / 18 = 0.4422 rounds to 0.44 per oz
technically, by rounding to the nearest cent, they are the same cost.
(5,7) (5,4) (7,4) hope that helps
