Answer: The answer for f= 3.1
Answer:
63
Step-by-step explanation:
(6+9÷3)×7
division is always first
(6+3)×7
then parenthesis
9×7
multiply
63
Answer:

Step-by-step explanation:
............................
The original number would be 900
By scientific notation I am assuming you mean standard form, as that is used primarily in scientific calculations. The answer in standard form would be

I hope this helps!