C=2x+12,000 , fixed cost means you’ll always have to pay it, and (x) represents how many fans there will be
You need to get x alone. So first you bring the 13 over and it becomes negative because it switches signs when switching sides
13x=104-13
13x=91
The you have to divide by 13 since you are multiplying on the other side
X=91/13
Your final answer should be
X=7
16.3%=0.163
353(0.163)=57.539
57.539 is rounded to 57.5
There are 57.5 millimeters of acid. Hope this helps!
Answer:
Yes, it is proportional.
You know because if you do $9/3 lbs that = 9/3 = $3 per pound
and
if you do $1.50/0.5 lbs = 1.5/0.5 = $3 per pound
Both of them are $3 per pound, so it is proportional.