Chen bikes 9 miles every day.
Step-by-step explanation:
every day 9 miles are added in the sequence 9 18 27 36 45 .
4 adults and 12 babies
step-by-step explanation:
4 x 7 = 28
12 x 15 = 180
180 + 28 =208
4 x 3 = 12
2? if not the correct answer you might need to provide more information