The quiz grades of a math class are given 81,75, 68, 97, 69, 81, 89, 74, 75, 82 91.90
The grades are normally distributed with a mean of 81 and a standard deviation of 92
What is the Z-score of the lowest grade in the quiz?
Round the answer to the nearest hundredth

When you answer this can you explain

Ihonestly have no clue if it's each or none.

Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions: y > 2x + 3y is less than negative 3 over 2 times x minus 4part 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 (â’4, 6) included in the solution area for the system? justify your answer mathematically. (4 points)