Answer:
The third option.
Step-by-step explanation:
Because of the exponent, (the tiny number in the right-hand corner) you have to multiply 5 4 times, which is the same as 5 times 5 times 5 times 5 times 5.
15 ??
Answer is (A) One-half times 14 times 57
-3.8
The answer is 156