In mathematics, an arithmetic progression (AP) or arithmetic sequence is a sequence of numbers such that the difference between the consecutive terms is constant.
Answer: area
Step-by-step explanation:
area of the wall
There are 4 base colors, and 3 top colors.
Blue and teal
blue and green
blue and white
red and teal
red and green
red and white
yellow and teal
yellow and green
yellow and white
orange and teal
orange and green
orange and white
they can make a total of 12 different flags.
where x is a pen and y is a pencil. Because a pen is .40 more than a pencil we can write this in terms of pencils and extra .40:

Therefore, a pencil costs 0.35 and a pen costs 0.75. Combined, one of each costs 1.10 dollars.