Two plane figures are congruent if and only if one can be obtained from the other by a sequence of which transformations?

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?

Atemperature of 1.64◦f corresponds to answer in units of ◦c.

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers