If an is a5
and
an-1 is a4
then using your recursive formula for an arithmetic sequence
an=an-1 +d
then
a5=a4+d
now, a4 =6 and common difference "d" is d=-11
hence
a5=6 -11
6-11= -5
any questions?
1 is C, since it is anything less than 8, so 7 times 2 is 14 minus 2 is 12.
2 is C, since it is anything less than 8, so 7 times 3 is 21, and 1 minus 21 is -20.
Answer:
Area = 52.81 square inches
Step-by-step explanation:

Answer:
$4748.80
Step-by-step explanation:
First, find the cost with 20% off, by multiplying the price by 0.8
5600(0.8)
= 4480
Find the cost with tax, by multiplying this by 1.06
4480(1.06)
= 4748.8
So, the sale price, including tax, is $4748.80