Can anyone help with this question ?

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?

Aline passes through 3,7 and 6,9 what equation represents the line

What is the measure of sty in oo below? 130 310 230 50