.
The hourly wage of some automobile plan workers went from 7.90 to 13.35 in 9 years annual raises
if their wages are growing exponentially what will be their hourly wage in 3 more years. Nearest (0.10)
~~~~~~~~~~~~~~~~~~
In this problem, we have given the exponential raise for 9 years,
and the question asks about this exponential function 3 years later.
In order for to make calculations minimal, I will apply a trick: I will find first
the coefficient of growth in 3 years, and then will use it to answer the question.
So, let R be the coefficient of growth in 3 year. Then I can write this equation
13.35 = ,
or
= ,
1.689873418 =
R = = 1.191108685.
Having it, the answer to the problem's question is in one line:
their hourly wage in 3 more year is 13.35*1.191108685 = 15.90 (rounded as requested). ANSWER
Solved.