Well if the alloy makes the 1000 grams, but you are dealing with copper that isn't even 100% copper, than you either need 55% more copper, which isn't given, which means you really need 550 grams of alloy copper.
The correct answer is c
(it is 3 times the sum of 6 + 5 not 3 times 6 like a is suggesting)
I’m literally bad at rounding but uh for the total volume of both shapes added together its 37.68
Answer:
for 9 miles = (9 x 1.50) + 2 = 15.5
For m miles = (m x 1.50) + 2 = 1.5m + 2