Identify the expression that is equivalent to 7a+6t+6a-5t+2.

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)

Solve the system of equations. x=-2y+1 and x+2y=9. show work

Which of the following describes how to calculate the value of x?