Answer:
The answer is "40 nickels/standard coins"
Step-by-step explanation:
The ratio of 40 nickels/standard coins is constant, that is 1 roll with coins per 40 nickels, that's why the equation is y = 40 
Answer:
18
Step-by-step explanation:
50 - 32 = 18
C, or the last photo, shows a reflection.
Answer: Volume is the amount of enclosed space inside a three dimensional figure.
Step-by-step explanation: