Solutions
1hr = 60 min
180 ÷ 60 = 3
<span>180 min = 3 hrs </span>
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: A 15
Step-by-step explanation:
