## anonymous one year ago Hi I need some help with (Modeling with Functions) The total daily cost (in dollars) of manufacturing scented candles is given by the function C(b) = 250 + 3b, where b is the number of candles manufactured. Which function represents the average manufacturing cost, A, in terms of b?

1. anonymous

@mathmath333

2. anonymous

could you help me @mathmath333

3. mathmath333

where are the options

4. anonymous

1. A(b) = b/250+3b 2. A(b) = 250+3b/b 3. A(b) = (250+3b) x (b) 4. A(b) = 250+4b

5. anonymous

i think it is either 3 or 4

6. mathmath333

is options be this \large \color{black}{\begin{align} A(b)=250+\dfrac{3b}{b} \hspace{1.5em}\\~\\ \end{align}} or this \large \color{black}{\begin{align} A(b)=\dfrac{ 250+3b}{b} \hspace{1.5em}\\~\\ \end{align}}

7. anonymous

the second one

8. anonymous

where there is a / im trying to say that everything befor that is above it

9. mathmath333

this is option B ? \large \color{red}{\begin{align} A(b)=\dfrac{250+3b}{b} \hspace{1.5em}\\~\\ \end{align}}

10. anonymous

yes

11. mathmath333

the average can be calculated when we divided the whole by number of times it occurs so it should be B

12. anonymous

OH! ok now i understand, thanks! that helped alot! !