pls help me with the question below, thanks!

Question 7: [15 marks] Suppose the wage-setting equation is W=Pe(1a+b) where PE is the expected price level, a is the rate of unemployment and b represents unemployment benets. The price-setting equation is P = (1 + m)W where m is the markup. 1. Find an algebraic expression for the natural rate of unemployment. 2. Draw the wage-setting and price-setting lines on a diagram with n on maxis and W/ P on yaxis. 8110?? the natural rate of unemployment in the diagram. 3. Suppose P'3 = aP, where a