What is 3 to the power of -4

Graph the system: f(x)= 3/x-2; f(x)= 1/2x + 2

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

You buy 4 items that cost 2.69 14.45 8.05 13.95 what is the estimated total round to the nearest dollar