What is the equation of the line tangent to the function f(x)=-x^2+5 at the point (1,4)

Arandom high school question but a hard one

Which logarithmic equation is equivalent to the exponential equation below? e^a=55(you will receive 34 points)

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?