The question would have been clearer if it had stated
A(L)=5L
according to standard math notation indicating that L is an independent variable. 5 is a numeric value, and therefore cannot vary, therefore a constant.
A constant of proportionality k when used in a proportional relationship, written
F(x)=kx
means that the function is proportional to the value of the independent variable x.
In the given case,
A(l)=5l, so 5 takes the place of, or simply IS, the constant of proportionality.
Note that the lowercase L in the above equation may have been, or could have been, confused with the numeric digit one (1). I usually write in uppercase when the letter L is used as a variable to avoid this problem.
Buying on credit was a huge problem in the 1920s. Since the 20s was a period of great economic boom, not many people took the future into consideration. The American farms and factories produced large amounts of goods and products during the prosperity before the Depression.
<span>Iconoclastic Controversy, a dispute over the use of religious images in the Byzantine Empire in the 8th and 9th centuries. The Iconoclasts objected to icon worship for several reasons, including the Old Testament prohibition against images in the Ten Commandments and the possibility of idolatry. The defenders of icon worship insisted on the symbolic nature of images and on the dignity of created matter.<span> </span></span>
