Pls help I’ll give brainlist

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

Find the slope of a line given the following two points

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field