Answer:
Option 1st is correct.
value of f = 348 pounds
Explanation:
As per the statement:
At a big cat reserve, a male Bengal tiger weighs more than a female Bengal tiger.
The male tiger weighs 445 pounds.
The difference in the weights of the tigers is 97 pounds
The zookeeper created the bar diagram and equation below is given as:

Subtract 97 from both sides we have;

Simplify:

or

Therefore, the value of f is, 348 pounds