Answer:
11
Step-by-step explanation:
30-2(7+2)-1
PEMDAS says parentheses first
30-2(9)-1
Then multiply
30 -18 -1
Then subtract
12-1
A. 11
30 - 14 -4 - 1
The answer is C
All of the numbers are all different a function is when there are no same numbers
the answer is 2.78 percent