I am unable to open a file so please don't make the explanation a file.Can you explain how to do these problems.

4) The graph of the equation y cos(y + x + x2) = x3 & the tangent line at point P are graphed at the right. A) Calculate the slope of the line at P (0, ST ) (Hint: When you have evaluated the derivative with respect to x DO NOT isolate -. It will get messy if you do! Instead, try substituting the x & y values of point P first) B) Write the equation of the tangent line at point P