Please help with calc 2 integration problem, THANKS?

Hi, How do you approximate the area of the region in the first quadrant bounded by the function f(x)= (4-x)/x, the x-axis, and x=1. It asked us to use the calculator but we know that x can't equal to zero, and we don't know how to figure out the lower bound. any hints and help is greatly appreciated. Also, it is a review question that is not grades, therefore, i am not cheating.