Help Me Answer This Math Or How To Work It..

45 To 15 = ?

I'm afraid I'm not familiar with the operator "To". Can you explain what it is?

Exponentiation?
45^15
45^{15}
45 to the 15th power = 6283298708943145751953125 =6.283298708943145751953125x10^24

Remember the old song by the group Chicago: "25 or 6 to 4"? I never understood what that meant either... ;)

2b-5=8b+1