Find each measure :)

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class

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)

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14