Each piece of licorice will be 2.4 inches
Work: 2/3 yard = 2 feet = 24 inches ÷ 10 = 2.4 inches
Paul spent $6 on the student discount card. 23 times 1.60 equals 36.80. Subtract that from 42.80 and you get 6
7-4=3
10-7=3
13-10=3
we can see that this is an arithmetic sequence with a difference of 3
the nth term=the first term +(n-1) times the difference
so a(n)=4+3(n-1)