Every year, the amount of CO2 in the atmosphere increases by a factor of

1/4 because there is 4 grades.

you would have to sell 24 bracelets.

step-by-step explanation:

84/3.5 = 24

answer: -10

step-by-step explanation:

s(t) = 1 - 10t

s(x) = 1 - 10x

s(x + h) = 1 - 10(x + h)

            = 1 - 10x - 10h

s(x + h) - s(x) = 1 - 10x - 10h - (1 - 10x)

                      = 1 - 10x - 10h - 1 + 10x

                      = -10h

= -10

=

x=0.8898305 is the answer to that equation