Can someone help me with this pls???

Find an equation of the line perpendicular to the graph.

This race was first held in 1953 on august 16th. every decade the race finishes with a festival. how many years is this?

Use the method of cylindrical shells to find the volume v generated by rotating the region bounded by the curves about the given axis.y = 7ex, y = 7e^-x, x = 1; about the y-axis