Answer: to make 78 copies it cost 26 dollars.
Step-by-step explanation:
18 copies - 6 dollars
78 copies - x dollars
Hence,

Answer:
16/28
Step-by-step explanation:
Multiply both the denomator and numerator by 4
Step-by-step explanation:
I am going to guest 25 mins
Is that the exact question? because the last part doesn't really make sense to me
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U² - 16 u + 64 = ( u - 8 )²
because: A² - 2 A B + B² = ( A - B )²
Answer: 64