The order of operations helps keep answers for multi-step equations similar. If the proper order of operations are not followed, then answers may vary. To show an example:
4 / 2 - 1
The proper order of operations would be:
Divide first, before subtracting
4 / 2 - 1
2 - 1
1
But if subtracting was done before dividing:
4 / 2 - 1
4 / 1
4
So not following the proper order would yield different and erroneous answers.
        
             
        
        
        
Answer:
7 dollars and 50 cents, price per bottle is 2 dollars (you can get this answer by dividing 10/4) and 50 cents multiply that by 3 and you get the answer, 7 dollars and 50 cents.
Step-by-step explanation:
I believe this is correct, if not feel free to let me know and I will fix it. I'm sorry in advance if it is incorrect.
 
        
             
        
        
        
Answer:
t = 6/5
Step-by-step explanation:
Step 1: Define
k(t) = 10t - 19
k(t) = -7
Step 2: Substitute and Evaluate
-7 = 10t - 19
12 = 10t
t = 6/5
 
        
             
        
        
        
Given:
The expression is:

To find:
The exponential notation for the given expression.
Solution:
We know that
 ...(i)
         ...(i)
We have,

Using (i), the given expression can be written as:

Therefore, the exponential notation of the given expression is  .
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Answer:
10
Step-by-step explanation:
yellow
6+6+3=15
so
for green 
4+4+2=10