y=0.189x+70.8

Solve this equation for x. x is the number of years since 1970 and the approximated life expectancy will be 80.2.
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1 Answer

???????? 80.2 ?????????

y=0.189x +70.8

x is the INVERS av y

0.189x=y-70.8

x=(y-70.8) / 0.189
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