What is the best approximation for the area of the circle if the radius is 6 foot use 3.14 to approximate pi

The equation respenting the left table is

Acircle has a diameter will endpoints of (-2,8) and (6, 4). what is the center of the circle

Which of the following is true about the graph of f(x)=7^x. select all that apply. a= it intercepts the x axis b=it intercepts both axis c=it intercepts neither d=it intercepts the y axis