300% as a decimal is 3.0 as a fraction it is 3
0.5% as a decimal is 0.005 and as a fraction 1/200
Here is all you need for b)
Copper: density ≤ 3.4
Iron: density=2.26
Before: 200 t
After: 800 t
It said the sale earned OVER $25 from selling cookies at $3 dollars each so if we let r=revenue , p=price per cookie and c=number of cookies sold:
pc>r and since p=3 and r=25
3c>25 divide both sides by 3
c>25/3
Since cookies are quantized units, they must be integers so:
c>8 1/3
c≥9 or in interval notation
c=[9, +oo)
X would equal 0 because u would use the distribution 3x+3=3x+3 and then subtract three from the three on the other side and then subtract 3x from 3x and then 0
