Does anyone know how to turn a fraaction percent into a decimal like this: 3/8% into a decimal anyone know, i need 3/8% and 17/20% into a you for whoever can anyone

Find the length of cu, the triangles are similar.

The estimated number of people to attend the last bengals game of the season was 2000. the actual number of fans attending was 1200. by what percent did the estimate differ from the actual?

Which graph represents the parent function of y=(x+2)(x-2)