I don’t understand this

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?

What function has a range {yly< 5}? question on picture above^

Mia’s gross pay is 2953 her deductions total 724.15 what percent if her gross pay is take-home pay