Answer:
6 centimeters per day
Step-by-step explanation:
Since there are 7 days in one week, 42 cm divided by 7 days will equal to the answer 6 centimeters per day.
(2x-1)(2x+1)
the answer is c
7 hours X 60 minutes = 420 minutes
420 minutes + 20 minutes = 440 minutes