Whats a equivalent expression for 10n + 15

You are cycling around europe with friends. you book into a hostel and you ask the owner what the ratio of men to women is currently staying there. there are 24 men and 6 women. what is the ratio of men to women in its simplest form?

Suppose a pendulum is l meters long. the time,t,in seconds that it tales to swing back and forth once is given by t=2.01

Binh says the point of intersections is (0,-3) which statements identify the errors binh made , check all that apply