8.5 pounds of ground beef for $19.00 find unit price

Two lines parallel to a third line are parallel to each other. always sometimes or never

This is different from the first one can someone me

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?