The cost functions for both years are illustrations of linear functions.
The cost function in 2017 is [tex]S(x) = 7228x + 5200[/tex]
Given
[tex]C(x) = 1807x + 1300[/tex] ---- in 2016
Let the cost function in 2017 be S(x)
From the question, we understand that:
[tex]\frac 12 \times S(x) = 2 \times C(x)[/tex] --- half a production in 2017 cost twice a production in 2016
Multiply through by 2
[tex]2 \times \frac 12 \times S(x) = 2 \times C(x) \times 2[/tex]
[tex]S(x) = 4 \times C(x)[/tex]
Substitute [tex]C(x) = 1807x + 1300[/tex]
[tex]S(x) = 4 \times (1807x + 1300)[/tex]
Open brackets
[tex]S(x) = 4 \times 1807x + 4 \times 1300[/tex]
[tex]S(x) = 7228x + 5200[/tex]
Hence,
The cost function in 2017 is [tex]S(x) = 7228x + 5200[/tex]
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