The reward is 20 ! confirm that f and g are inverses by showing that f(g(x)) = x and g(f(x)) = x. f(x) = ((x - 7) / (x + 3)) g(x) = - 7) / (x - 1))this is too complicated fort-t

Good use of parentheses in asking the question; fellow questioners take note.

It looks like we have some algebra ahead of us:

When we have a complicated fraction like that it's best if we multiply top and bottom by the inner denominators to simplify:

OK, now the other way.

Not so bad.

answer

explanation

the area of a circle is calculated using the formula

or

we can use any of the above formulae to calculate the required. preferably, let us use the latter since the diameter is

we substitute the diameter into the formula to get:

this is the exact value for the area of the circle.

the correct answer is a

the first option is the answer.