Need help with this ons plz

Given the conditional statement, match the following. conditional statement: if two lines intersect, then their intersection is one point.

Which of the following answers is 5/25 simplified? 1/5 5/5 2/5 1/25

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 =