A golfer hits a ball from the fairway to the green. The flight of the ball is modeled by the equation , where `x` is the time in seconds (s) since the ball was hit and g(x) is the height of the ball in feet (ft).

Explain why the function is discontinuous at the given number a. (select all that apply.) f(x) = 1 x + 1 a = −1 f(−1) is undefined. lim x→−1+ f(x) and lim x→−1− f(x) exist, but are not equal. lim x→−1 f(x) does not exist. f(−1) and lim x→−1 f(x) exist, but are not equal. none of the above

What is the distance between the points 4,10 and -3,-14 on the coordinate plane

Find the volume of the solid obtained by rotating the region enclosed by the curves y=1x and y=7^-x about the x-axis. (use symbolic notation and fractions where needed.) volume =