Hi there, I believe the answer is 20. Because, each corner is 4 chairs plus every two feet, equals 20. Hope this helps!
A score of 85 would be 1 standard deviation from the mean, 74. Using the 68-95-99.7 rule, we know that 68% of normally distributed data falls within 1 standard deviation of the mean. This means that 100%-68% = 32% of the data is either higher or lower. 32/2 = 16% of the data will be higher than 1 standard deviation from the mean and 16% of the data will be lower than 1 standard deviation from the mean. This means that 16% of the graduating seniors should have a score above 85%.
So if you price tax (for you ) for $.10 cents each and you sell 60 sandwich's in one week at least your profit would be $31 approximately since bread last longer and you still have ingredients make sure you always have some and use coupons and discounts to buy deli meats and bread + condiment or what ever you need to take the money you earn and buy and after 8 weeks you earn $1,500 then after buying a lot of stock you have $1,300 upgrade to a 500$ buying period to get water drinks and other popular food. sandwich to 4.00 $ water is 2 for 1.50 and any other food over 3.00 yu get the profit of about $2600 getting a used food trruck to caryy on th buisness
X = 2
4x + 8 = 16
-8 -8
----------------
4x= 8
-- --
4 4
------------
x=2
