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Find the zero function by factoring (try to show work) h(x)=-x^2-6x-9

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?

What value is a discontinuity of x squared plus 8 x plus 4, all over x squared minus x minus 6?