Question

in 1972, federal vehicle emission standards allowed 3.4 hydrocarbons released per mile driven. By 2007 the standards allowed only 0.8 hydrocarbons per mile driven. What was the rate of change from 1972 to 2007

Answer 1

@Vocaloid

Answer 2

@dude @umm @Ultrilliam

Answer 3

About -0.07/year

Answer 4

but how would i get that answer

Answer 5

@Vocaloid

Answer 6

make 1972 your starting point so y=0 and then the hydro your x so x=3.4 then you have (3.4,0) then 2007 is 35 years after 1972 so y=35 and x=0.8 (0.8,35) then use then point slope formula

Answer 7

ok......

Answer 8

@Mehek @dude