Can you write the solutions step by step in order to further understand my assignment please.. Thank you for sharing your ideas!!

Find the area in square units bounded by the following: (Show graph and detailed solution. Box final answers.) 1. y=-12, X=2 to X=8, X-axis 2. y2 = 4x, x=0 to x= 4 3. y=9-x2 and the x-axis. 4 y = " + the x-axis and the limits x=0 and x=3. 5. y = 2x3/2 between x = 0 and x = 4