Answer:
45 minutes.
Step-by-step explanation:
d = 40 - 1/5m
When d = 31 we have:
31 = 40 - 1/5 m
1/5 m = 40 - 31 = 9
m = 9*5
= 45 minutes answer.
12.83 but the three repeats .
It is degree 7
The degree is the largest exponent.
In this expression you have the term 3x^3y^4
In the case where x=y this would become 3x^3x^4, or 3x^7
Hence degree 7
B would be the answer for sure