For the following set of data, find the number of data within 1 population standard deviation of the mean. Data Frequency 15 1 16 7 17 11 21 13 22 12 25 9 28 6 30 1 i need this quckly please
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Ineed big ! the cost of a school banquet is $25 plus $15 for each person attending. create a table, sketch the graph, and write an equation in slope-intercept and point-slope form that gives total cost as a function of the number of people attending. what is the cost for 77 people?

With this question, the answer with the red arrow is incorrect!

In the figure, ab = 14 inches, ac= 16 inches,ay=9 inches, and bz = 10 inches find the area of the triangle abc. answer quick