A. IS THE ANSWER!
STEP-BY-STEP Explainaton
Answer:
The circumference would be 12*3.14/2=18.84
Answer:
f=15
Step-by-step explanation:
f/6=2.5
f=2.5*6
f=15
Decrease means minus or '-'
it is an operation because it opperates or does something to the numbers. it is like a verb
an integer is the thing being operated on. it is like the noun
Answer:
Let 
Solution: 
Step-by-step explanation:
See attached for step-by-step