Plzzz help dont have much time

Write the rational number in lowest terms 99/-15

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)

Find the volume of the solid bounded by the plane z=0 and the paraboloid z=1-x^2 –y^2