Question

A(f) = 1 + f/30
)what is the inverse?

Answer 1

is the answer; a/30 - 1 ?

Answer 2

A^-1 (f) = 30 (f - 1)

Answer 3

im so confused :(

Answer 4

Write it as A(f) = (30 + f)/30
and then go from there.

Answer 5

Did you understand it yet ?

Answer 6

Or you want me to elaborate it ?

Answer 7

elaborate please

Answer 8

ok give me a sec.

Answer 9

Replace A(f) with "y"
so it will be
y = 1 + f/30
Now switch "y" with "f"
f = 1 + y/30
multiply by 30 on both sides
30f = 30 + y
Now
30f -30 = 30 +y -30
which leaves us
30f -30 = y
Now
y = 30 (f - 1)
Replace "y" with
A^-1(f)

Answer 10

ok I believe I got it ... thanks

Answer 11

Welcome.

Answer 12

wait sorry ....I don't understand the - 30 in front of y

Answer 13

-30 on both sides to remove the +30 with "y", Because you can not just do -30 on one side. The equation has to be balanced.

Answer 14

Or you can just do this
30f = 30 + y
30f - 30 = y
and then continue.

Answer 15

Thank you !!