Answer:
19
Step-by-step explanation:
I took one for the team
Observe that

In the original equation, divide both sides by
:


Next,

where
is any integer. Then

Fix
to ensure
, so that

Ln(56) = 4x-9
ln(56) + 9 = 4x
(ln(56) + 9)/4 = x
Answer:
12/45
Step-by-step explanation:
The unit rate is 12/45, because 4 times 3 is 12, and 9 times 5 is 45.