HELP!!

15. Suppose U= {1, 2, 3, 4, 5, 6, 7, 8, 9, 10} is the universal set and M= {7, 8, 9, 10}. What is M'?

A. {1, 2, 3, 4, 5, 6}

B. {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}

C. cannot be determined

D. {7, 8, 9, 10}

24. The ordered pairs (1, 5), (2, 25), (3, 125), (4, 625), and (5, 3125) represent a function. What is a rule that represents this function?

A. y=x^5

B. y=5x

C. y=5^x

D. y=x+5