Must a definite offer include enough information to reasonably infer the terms?

Solve the equation by completing the square. x^2+2x=17

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

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)