Someone pls help me what is the equation for this graph pls help me and get it right pls :)

Write the equation for the parabola that has x− intercepts (−2,0) and (4,0) and y− intercept (0,4).

9/10 divide by -3/15 as a mixed number

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?