Is this a linear function?

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?

Which of the following is an example of conditional probability

Complete the conditional statement. if a + 2 < b + 3, then a < b b < a a – b < 1 a < b + 1