This problem is related to the concept composite function
Answer: to make 78 copies it cost 26 dollars.
Step-by-step explanation:
18 copies - 6 dollars
78 copies - x dollars
Hence,

Answer: 75% Of the original price
Step-by-step explanation:
Answer:
Step-by-step explanation:
64
Answer:
4.52 x 10^-7
Step-by-step explanation:
you have a very small number (numbers to right of decimal) so you're exponent will be negative.