Verify the identity algebraically. 7 sec(y) cos(y) = 7

Find the solution of this system of equation -7x+y=-20 9x-3y=36

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)

Is there an x intercept in the equation 60*1.15^x