Plase me this is very late work

nine thousand, ten and two hundred thirty-one thousandths
9,000 + 10 + 0.02 + 0.003 + 0.0001
david made a mistake when writing the number above in expanded form.

part a. find davids mistake and correct it.

part b. explain why davids expanded form of the number was wrong.

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)