Which equations represent two vertical asymptotes of the function y = 3 cot(4/3^x)?

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

Candy lives in the center of town. her friend darlene lives 28 miles to the east and her friend dana lives 21 miles north. approximately how far do dana and darline live apart ?

Petes dog weighed 30 pounds it then lost 16% of it's weight how much did pete lose