Question

Annie has a compost pile that produces 12 pounds of compost a day from yard waste. Which function expresses the amount of compost (c) as a function of the number of days (d)?
What function represents the relationship between the amount of compost and the number of days? What is the input?
A) c=f(d)=12d A) d
B) d=f(c)=12m B) c
C) c=f(d)=12+d C) 12

Answer 1

The total amount of compost that the  Annie gets is 12 each  day
so 
c  that is equal to 12 every d
hence
c = 12d
so the in put is A
hope it helps

Answer 2

Answer:- A. $c=f(d)=12d,\text{ where d is the number of days}$

The input is d.

Step-to-step explanation:-

If 'c' represents the amount of compost produced in 'd' day from yard waste.

Since, the amount of compost produced in one day =12 pounds

Then the compost produce in d days is given by :

$c=12\times d\\\Rightarrow\ c=12d$

Hence, the function represents the relationship between the amount of compost and the number of days is given by :-

$c=f(d)=12d,\text{ where d is the number of days}$

Since, 'c' is dependent variable which depends on the number of days 'd'.

Therefore, the input is d.