Question

In a given city, the permissible limit of CO (carbon monoxide) in the air is 100 parts per million (ppm). The city monitors the steady rise of CO from various sources annually. In which year (rounded off to the nearest integer) will the CO level exceed the permissible limit?




2017



2018



2019



2022

Answer 1

not enough info to do this

Answer 2

its

Answer 3

there sorry

Answer 4

we have the way it rises over thirteen years
amount it rises is 110-77 = 33 ppm over 13 years

Answer 5

so we can write an eqaution relating ppm of CO (y) with the year x.

Answer 6

what is the slope of the line in the diagram?

Answer 7

how do I do solpe again?

Answer 8

rise over run?

Answer 9

yes

Answer 10

rise = 33 run = 13

Answer 11

so 33*13?

Answer 12

or 33/13?

Answer 13

no 33 / 13
divide not multiply

Answer 14

ok hold on

Answer 15

13 only goes 2 time in 33 well 2 full times

Answer 16

divide it on ur calculator
2.54 is ok

Answer 17

I wish I had a calculator I dont

Answer 18

sorry

Answer 19

so if we count year 2013 as zero and the ppm in 2013 is 77
we can write the equation as

y = 2.54x + 77

Answer 20

where y = ppm CO and x is the number of the year after 2013

Answer 21

(counting 2013 as 0)

Answer 22

add 77 to 2013?

Answer 23

so we get
100 = 2.54x + 77

solve for x and add this value to 2013 and you'll get your answer

Answer 24

im totally lost sorry

Answer 25

but I will try it

Answer 26

y =100 because thats the ppm we want to know about