Differentiate which of the following models best fits the data. (-2,-11), (0,-3), (1,-2), (3,-6), (5,-18) f(x) = – x2+ 2x - 3 f(x) = x + 0.5 f(x) = - x3 + x + 1 f(x) = (2)x

Anyone know? will mark brainliest if correct!

Closing a credit card usually _your debt ratio.a. increasesb. decreasesc. improvesd. has no effect on

Suppose that a households monthly water bill (in dollars) is a linear function of the amount of water the household uses (in hundreds of cubic feet, hcf). when graphed, the function gives a line with slope of 1.65. if the monthly cost for 13 hcf is $46.10 what is the monthly cost for 19 hcf?