Write an equation and solve: twice a number, increased by 3 is 7.

Which statement best describes the polynomial

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?

Equation for the calculation double 2 and then add 5