Finding domaind and range of polynomial functions. What is the domain?

The given dot plot represents the average daily temperatures, in degrees fahrenheit, recorded in a town during the first 15 days of september. if the dot plot is converted to a box plot, the first quartile would be drawn at __ , and the third quartile would be drawn at link to the chart is here

1: 4 if the wew 35 surfboards at the beach how many were short boards?

Given sin28.4=.4756, cos28.4=.8796, and tan28.4=.5407 find the cos of 61.6