Problem

Use the information given to build a linear equation model, then use the equation to respo...

Use the information given to build a linear equation model, then use the equation to respond.

Decrease in smokers: For the years 1990 to 2000, the percentage of the U.S. adult population who were smokers can be approximated by the equation where y represents the percentage of smokers (as a whole number) and x = 0 represents 1990. Use the equation to find: (a) the percentage of adults who smoked in the year 2005 and (b) the year the percentage of smokers is projected to fall below 15%.