David and sons corp., a firm that manufactures home appliances, uses a symbol resembling a lightning strike to distinguish its products from other similar products in the market. this symbol is an example of a(n):
a. statute.
b. patent.
c. embargo.
d. trademark.

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link :

answer; im thinking customer:

match each type of restriction with one of its effects.

a. land-use laws

b. labor laws

c. banking regulations

a. controlled development of towns and cities

b. protection of young workers

c. greater financial stability

a manufacturer of printed circuit boards uses exponential smoothing with trend to forecast monthly demand of its product. at the end of december, the company wishes to forecast sales for january. the estimate of trend through november has been 200 additional boards sold per month. average sales have been around 1000 units per month. the demand for december was 1100 units. the company uses α = 0.20 and β = 0.10. make a forecast including trend for the month of january.