Please see the pic, I'd solved in it and I'm so sorry for cuttings.
Answer:
Step-by-step explanation:
to find composite function:
put the inner funtion into the outer function
inner func.=
outer= 
hence,

12/16=.75$ per pound and 28/35=.80 cents a pound
1 1/3
one and one third
4/3
Which of the following did you include in your response?
Javier did not raise the coefficients to the third power
When Javier raised (x^1)^3 to the third power, he wrote that x^4, but it equals x^3.
In the last step, Javier divided the exponents. He should have used the quotient of powers property and subtracted them.