Step-by-step explanation:


2) $3.85
5)125
7)175cm
10) 10 000cm2
11) $4.10
12)4
13)575mL
Answer:
= 3n + 77
Step-by-step explanation:
The nth term of an arithmetic sequence is
= a₁ + (n - 1)d
where a₁ is the first term and d the common difference
Here a₁ = 80 and d = a₂ - a₁ = 83 - 80 = 3 , then
= 80 + 3(n - 1) = 80 + 3n - 3 = 3n + 77
They both can have two cookies and then split the fith one in half