Answer:
The cost of extracting the first 50 tons of copper is $151,000.
Step-by-step explanation:
Start-up costs of $150,000.
For the 50 tons of cooper.
So
1 thousand dollars.
$150,000 + $1,000 = $151,000
The answer is 30.
Don't worry about the x and y it just make your head confuse, that's what my teacher said just add up the number.
2 hours
1/3 + 1/6 = 3/6 or 1/2
If it takes 1 hour to fill half the pool it takes two hours to fill the whole pool
Answer is 30.25
hope it helps u