PLS ANSWER THIS , I NEED HELPP

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

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm

If f(x)=1/x and g(x)=x+4 which of the following is the graph