Add two anchors. hope this helps! plz give me brianlist i have little points
X in litres is 67% herbicide
y in litres is 46% herbicide
{x+y=42
{0.67x+0.46y=42*0.55
{67x+46y=2310
{46x+46y=1932
21x=378
x=18 litres
A. She need to use 18L
I will take the sugestion, so 85 units per month (100 is full capacity)
so while doing maintinance, the 6 months is wasted, 0 ouput, basically 85*6=510 lost
now we have to see how many months x it takes for the output to match
the output that would have been is
510+85x
the output now is 120x
so
510+85x=120x
minus 85x both sides
510=35x
divide both sides by 35
14.57=x
round up
15 months needed
For this case we have the following inequality:

We will solve the inequality algebraically.
We have then:
We add 2 to both sides of the inequality:

Rewriting we have:

Therefore the solution is:
(-inf, -3)
Answer:
(-inf, -3)
See attached image.