HELP 100 points MATH
2 answers:
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Answer:
(a)Required relation is 393 + 2x ppm
(b)Amount of concentration in 2025 is 419 ppm
(c)After 3.5 years concentration of is 400 ppm
Step-by-step explanation:
From the question it is given that :
Estimated in atmosphere in 2012 is 393 (parts per million)ppm
level increasing per year is 2 ppm
(a) Let y be the concentration of in atmosphere after x years from 2012 then:
y = 393 + 2x ppm
Therefore required relation is 393 + 2x ppm
(b) amount of in 2025 i.e.,x = 13 years after 2012 is y
y = 393 + 2 x 13 = 393+ 26 = 419 ppm
Therefore, amount of concentration in 2025 is 419 ppm
(c) give y = 400 ppm and x be the year then
400 = 393 + 2x
2x = 7
⇒ x = 3.5 years
Therefore after 3.5 years concentration of is 400 ppm