Since y is less than x by 7 times

so in terms of x we write
x=7y
Answer: C
Explanation:
Sqrt 9 x sqrt 4 = sqrt 9 x 4
64%, because 40% of 60% is 24%, and 2 mg of pure copper is 40% of the overall alloy, so add 24 and 40
Answer:
The answer is 7,200...........