let-cxcxcx-be-the-total-cost-in-dollars-of-electricity-used-by-a-factory-from-ti

Question

Let $C (x)$ be the total cost in dollars of electricity used by a factory from time $t equals 0$ to $t = x$ hours, where the cost rate is given by $c (t) = {\begin{matrix} 0.5 t + 3; t \leq 4 \\ 5; t > 4 \end{matrix}$ .
Find the formula for $C (x)$ .

Find the formula for $C (x)$ .

Accepted Answer

$C (x) = {\begin{matrix} 0.25 x^{2} + 3 x; 0 \leq x \leq 4 \\ 5 x - 4; x > 4 \end{matrix}$

Answer

$C (x) = {\begin{matrix} 0.25 x^{2} + 3 x; 0 \leq x \leq 4 \\ 5 x - 4; x > 4 \end{matrix}$

Answer

$C (x) = {\begin{matrix} 0.25 x^{2} + 3 x; 0 \leq x \leq 4 \\ 5 x - 4; x > 4 \end{matrix}$

Answer

$C (x) = {\begin{matrix} 0.25 x^{2} + 3 x; 0 \leq x \leq 4 \\ 5 x - 4; x > 4 \end{matrix}$