The correct answer to this open question is the following.
Although the question does not provide options or statements to answer it, we can say that Northwest Coast Indians were able to live in permanent villages because of the following factors. These North American Indian tribes from the Pacific could settle in a land where the weather conditions allowed them to grow some crops, the climate was not as extreme as in the East, and had the enormous advantage to live next to the Pacific harbor, so the could benefit from the sea. They were good fishermen and always had food for their families in the form of salmon, shellfish, clams, fruits, and some vegetables.
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The percent of increase in sales from last year to this year is 5%.
Since the current vacuum sales is compared to the previous vacuum sales, the previous vacuum sales will be used as the basis of either increase or decrease of sales in the current year. In this instance, it is increase in sales.
We simply divide 567 by 540 and multiply the quotient with 100% and deduct 100% from the product to get the percent increase.
567 / 540 = 1.05 x 100% = 105% - 100% = 5% percent of increase.
or simply get the difference in sales and divide it by the previous sales and multiply by 100%
567 - 540 = 27 / 540 = 0.05 x 100% = 5%