How do you use an exponent to represent a number such as 16

The table represents a function f(x). what is f(3)? a.-9 b.-1 c.1 d.9

What is the result of adding the system of equations? 2x+y=4 3x-y=6

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