If y = 5, then what is the value of 10y y3-y2 ?
A
502
B
100
C
2005
D
500
Correct Answer: 500
10 √ y3 - y2 = 10. 5 √53 - 52 = 50 √ 125 - 25 = 50√100 = 50. 10 = 500