Answer:
-5
Step-by-step explanation:
Concept: Binomial Multiplication
see below
1. yes
2. no, 4.82 x 10^4
3, no, 9.9 x 10^-4
4. no, 3.6 x 10^6
5. yes
6. no, 7.8 x 10^-4
12 stores
180 * 1/15 = 180/15 = 12