A commercial prawn fisherman recorded the number pf prawns he took from each trap. The average number of prawns per trap was 230 with a standard deviation of 22. What number of prawns per trap would you expect in the interval symmetrical about the mean where 80% of the numbers would be found?

#12 find the value of x. #13 find the value of the variable.

You got a job selling magazines door-to-door. you are paid $100 per day plus $1.50 for each magazine you sell. which recursive formula models this situation?

Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions: y < 4x − 8 y is greater than or equal to negative 5 over 2 times x plus 5 part a: describe the graph of the system, including shading and the types of lines graphed. provide a description of the solution area. (6 points) part b: is the point (5, −8) included in the solution area for the system? justify your answer mathematically. (4 points)