Answer:
In this case the Commutative Property is being used.
28.50x + 110.99(14-x)=811.45
distribute
28.50 x + 1553.86-110.99x =811.45
combine like terms
-82.49x+1553.86=811.45
subtract 1553.86 from each side
-82.49x =-742.41
divide by -82.49
x=9
He bought 9 of the 28.50 features and 5 of the 110.99 features
The charge should be $6. I believe I set this up correctly; let me know if there are any errors. Hope this is helpful & accurate.
Answer:
-5
Step-by-step explanation: