Answer:
The first term is:
Step-by-step explanation:
The arithmetic sequence is defined by
where
is the first term
is the common difference
as
the 17th term of an arithmetic sequence is 51.
i.e.
so
∵
,
,
∵
Therefore, the first term is:
Solution: The total cost of the gift including the tax = $55.80
The amount paid by Montel = $14
The amount paid by Raymond is
Therefore, Raymond paid $18.6
The amount paid by Emily is
25% of 55.80
Therefore, Emily paid $13.95
We also know that the remaining amount is paid by Leanne.
Therefore, the remaining amount is:
Total amount - Amount paid by Montel, Raymond and Emily
The amount paid by Leanne is $9.25
We clearly see, Raymond has paid $18.6, which is the greatest part of the cost $55.80