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Mathematics
Mathematics
Problem
The concentration of a chemical in a solution after
t
t
t
hours is modeled by
C
(
t
)
=
5
t
t
2
+
1
C(t)=\dfrac{5t}{t^{2}+1}
C
(
t
)
=
t
2
+
1
5
t
milligrams per liter. At
t
=
2
t=2
t
=
2
, what is the equation of the normal line to the graph of
C
C
C
? a)
C
=
3
5
t
+
4
5
C=\dfrac{3}{5}t+\dfrac{4}{5}
C
=
5
3
t
+
5
4
b)
C
=
5
3
t
−
4
3
C=\dfrac{5}{3}t-\dfrac{4}{3}
C
=
3
5
t
−
3
4
c)
C
=
−
3
5
t
+
16
5
C=-\dfrac{3}{5}t+\dfrac{16}{5}
C
=
−
5
3
t
+
5
16
d)
C
=
1
3
t
+
4
3
C=\dfrac{1}{3}t+\dfrac{4}{3}
C
=
3
1
t
+
3
4
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