Im confused on how to answer these questions

Figure 10-4 130 Price level 110 - - 80 1,000 5,000 6,000 Real output 28. In Figure 10-4, if full employment occurs at 5,000 and the price level is currently 130, then we can expect the a. aggregate supply curve to shift to the left until a new equilibrium is established at an output level of 4,000. b. aggregate demand curve to shift to the right until a new equilibrium is established at an output level of 6,000 . the price level to fall to 110. d. aggregate demand to shift to the left and aggregate supply to shift to the right until the price level reaches 130. 29. In Figure 10-4, if full employment occurs at an output level of 4,000 and the economy is currently at an output level of 5,000 then we can expect a(n) . increase in autonomous consumer spending that shifts the aggregate demand curve to the left increase in wages that will shift the aggregate supply curve to the left. C. decrease in investment spending that shifts the aggregate demand curve to the left. d. decrease in wages that will shift the aggregate supply curve to the left. 30. Resource prices are fixed for some period of time because a. some workers enter into long-term contracts. b. firms purchase raw materials on set-price contracts. c. many workers get pay increases only once a year. d. All of the above are correct. 31. If profit per unit equals (price - cost per unit) and costs are temporarily fixed, then the aggregate supply curve will have a. a basic "U" shape. b. a negative slope. C. a positive slope. d. All of the above could be correct