##### Can someone explain to me how they got the answer ?

 Mathematics Tutor: None Selected Time limit: 1 Day

For each of the following functions C = C(t), find the value of C(0), reporting the answer rounded to two decimal places. Use your calculator where it is appropriate.
(a)     C = 0.8 + 2.79e -0.34t
C(0) = (No Response)

3.59

(b)
C =
 12.38 0.08 + 0.58t

C(0) = (No Response)

11.46

(c)
C =
t − 9
 t + 9

C(0) = (No Response)

-3.00

(d)     C = 2 × 0.5t / 5730

C(0) = (No Response)

2.00

Oct 3rd, 2015

(a) C = 0.8 + 2.79e^ -0.34t
C(0) = 0.8 + 2.79  e^ -0.34*0

= 0.8 + 2.79  e^ 0

= 0.8 + 2.79  *1..............................(because e^0 =1)

(b)

C =  12.38 / 0.08 + 0.58^t

C(0) =  12.38 / 0.08 + 0.58^0

= 12.38 / 0.08 + 1 ................................(any number^0 =1)

= 12.38 / 1.08

c)

C = t-9 /t+9

C(0) = 0-9/0+9

= -9/9

(d) C = 2 × 0.5^(t / 5730)

C(0) = 2 × 0.5^(0/ 5730)

= 2 × 0.5^0

= 2 *1

Please let me know if you need any clarification. I'm always happy to answer your questions.....thank you
Sep 15th, 2015

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Oct 3rd, 2015
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Oct 3rd, 2015
Dec 11th, 2016
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