Answer:

Step-by-step explanation:
Since we see that 3/7 is multiplied by itself three times, we can use exponents as a shorter way to write this. The expontent tells us how many times the base number, 3/7, is multiplied by itself.
= 
We then multiply by -1 to (3/7)^3 to get the exact answer.

1. 1 hour and 30 minutes 2. 11:35 : your welcome !
Answer:
C (3²/35+3.5²/39) For more enquiries connect [email protected] AT MY G mail account