Someone please help me with my tough matlab work, dont have th image and just learned the basics of imaging

7. Open the standard image, 'coins.png' with the imread ( -) function. Displa the image with the same 256-element gray colormap. Use the Matlab function, graythresh () to threshold the image and make a Black & White image. Display the B&W image. Adjust the threshold level to of its calculated value and make and display another B&W image. What is the result? 8. Using the results from Problem #7, dilate the Black & White image with a small circle, 'disk', and display the results. Adjust the disk size and see what happens. Erode the resulting B&W image with the same disk and display the results. What is the result? What other Matlab operation is a dilation followed by an erosion? 9. Count the number of coins from Problem #8. The answer should be 10, Look at Matlab's connected components. You may have to remove the smaller objects using bwareaopen ( or by checking the size of the pixel index list