0.3×8=2.4
1.5×3=4.5
(2.4+4.5)+36=42.9
I would consider these results to be valid due to the fact that high school boys in a basketball team are pretty tall,
i guess some are taller, some shorter that 6 feet 1 inch, but the average height seems to be valid
Equal expressions can be taken equal to an another variable. The system of equations representing the equation is 
<h3>What is logarithm and some of its useful properties?</h3>
When you raise a number with an exponent, there comes a result.
Lets say you get
Then, you can write 'b' in terms of 'a' and 'c' using logarithm as follows
Some properties of logarithm are:

Log with base e = 2.71828... is written as
simply.
Log with base 10 is written as
simply.
The given equation is:

Adding
on both the sides, we get:

The, we get two equations as:

This is the needed system of equations.
Learn more about logarithms here:
brainly.com/question/20835449