PLS HELP, LOTS OF POINTS

If a baby uses 15 diapers in 2 days, how many diapers will the baby use in a year?

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?

Use circumcenter theorem to solve for the given values