Apopulation increased 13% up to 2,877. what was the population before the increase?

Which represents the inverse of the function f(x) = 4x? h(x) = x + 4 h(x) = x – 4 h(x) = x h(x) = x

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

[10 points, algebra 2-simplifying complex fractions]according to my answer key the restrictions are -1 and 4. but why not positive 1?