Answer:
7m(3m^6 - m^4 + 7)
Step-by-step explanation:
This is a factorization question
All we want to do here is to factor out 7m from each term of the polynomial
This becomes;
21m^7 -7m^5 + 49m = 7m (3m^6 - m^4 + 7)
Part 1: S-6 -78 Part 2: S-72
Trust me.. it makes sense
1/10
(4/40)/ (4/4) = 1/10
The 4th day so 21 miles the girls would have to run