PLEASE HELP 20 points

Find the vertex of the function given below y=x^2-6x+1

The table shows the balance of a money market account over time. write a function that represents the balance y (in dollars) after t years.

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?