Question: Which expression is equivalent to (15^{3})(15^{-7}) ?
A) 15^{-21}
B) -15^{4}
C) 1/15^{4}
D) 1/15^{-4}
Correct answer: C
Grade: 8 | Topic: Expressions and Equations | Difficulty: Easy | Standard: 8.EE.A.1