Answer:
The correct answer is C. 3(5)^6
Step-by-step explanation:
Which expression is equivalent to 3 x 5 x 5 x 5 x 5 x 5 x 5?
3 x 5 x 5 x 5 x 5 x 5 x 5
We can observe that there is a number three that is multiplying six times the number five. Translating this as a mathematics expression, we have:
3 * 5⁶
The correct answer is C. 3(5)^6
A is discarded because the number that is multiplying 5⁶ is 3 not 15
B is discarded because the number that is multiplying 5⁶ is 3 not 15 and 5 is multiplied 6 times, not 7. That is also the reason why we discard answer D.