How does solving linear inequalities compare with solving linear equations?

Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.

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 transformations will always produce a congruent figure?