... not enough information to answer
Answer:
Infinity
Step-by-step explanation:
-4y + 4y + 2 = 2
2 = 2 = always true
The range would be [-3, infinity)
-3 (inclusive) to infinity (non-inclusive)
This could be rephrased as:
You start with 100 grams of a substance. One year later you have 70 grams. What is the half-life?
We need this formula:
half-life = (time * natural log (2)) / natural log (beginning amount / ending amt)
half-life = (1 year * .69315) / natural log (100 / 70)
half-life = (.69315) / 0.35667494396
half-life = 1.9433661145 years
Rounding to nearest year half-life = 2 years
Sourse: https://www.1728.org/halflif2.htm
(See problem 3)
Answer:
Multiplication.
Step-by-step explanation:
Given:

Also 
Solution:
It has been given that value of x is 5.
So if we substitute the value of x in given equation the we get;

Now by PEDMAS, The first operation perform will be the terms in parenthesis and in that too the first will be multiplication.
so we get;

Now again Solving the terms in parenthesis we get;

Now the next operation will be addition then we get;

And finally performing subtraction we get;

Hence The first operation performed in given equation is multiplication.