Respuesta :

AL2006
She should use 13 factors.
All 13 factors are the same thing . . . 7 .

7^13 should be written as 7¹³ .

It means:  7·7·7 · 7·7·7 · 7·7·7 · 7·7·7 · 7

Answer:

The answer is 13 factor took the test!