PEMDAS. 16/4 = 4. 4+42 = 46. 46-4 = 42. Answer is 42!
In Kg it’s 2.56 so multiply that by 1000 which gives you 2650 grams. :)
Given:
The inequality is:

To find:
The inequality after isolating the y-term.
Solution:
We have,

On simplification, we get


Subtracting 2 from both sides of the above inequality, we get


Therefore, the required inequality is
.
This is the concept of quadratic equations, solving the equation 2x^2-12x+20=0 using the formula we get:
x=[-b+/-sqrt(b^2-4ac)]/(2a)
from our equation, a=2,b=-12 and c=20
x=[-(-12+/-sqrt((-12)^2-4*2*20)]/(2*2)
x=[12+/-sqrt(144-160]/4
x=[12+/-sqrt(-16)]/4
x=[12+/-4i]/4
x=[3+\-i]
the answer is A] 3+/-i