The expression would be: 4*3+1+1
Answer:

Step-by-step explanation:
Let
, that is a be any real number.
The inverse property of addition says that, the sum of a number
and its additive inverse
gives the identity element of addition which is zero.
That is :

We can rewrite this as 
From the above options, we have the correct answer to be the first choice
Answer:
20%
Step-by-step explanation:
54-45 = 9
9/45 = 0.2
0.2*100 = 20
Production increased 20%