Answer:
<em>y ≥ - 0.8 </em>
Step-by-step explanation:
= 5y + 4
= 5y + 4
5y + 4 = 5y + 4 and 5y + 4 ≥ 0 ⇒ y ≥ - 0.8
y ∈ [ - 0.8 , ∞ )
- ( 5y + 4 ) = 5y + 4
10y = - 8
y = - 0.8
The answer is <em>y ≥ - 0.8</em>
we are given

step-1: Factor terms



now, we can plug these values
and we get
=
step-2: Cancel common terms
we get
=
we can again cancel numerator and denominator
and we get
=
.............Answer
Answer:
5=12
3=? then Criss cross it and you will get 12*3 divided by 5 then you get 7.2
so the answer will be 7 days
F(-4)= -4(-4) -2
F(-4)= 14
The concentration of the mixed solution would be 45%