Nina ran 12 4/5 laps in 1/4 of an hour. At this rate how many laps can she run in an hour? simplify please

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

Find the slope and the y-intercept if there's one and the equation of the line given these two points( 3, 2) and( 3, -4)

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?