Simplify the expression 2x - 4 + 3x

What is the range? can’t seem to find it out

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?

2. explain in words how you plot the point (4, −2) in a rectangular coordinate system.